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Sony CRT TV not switching on
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mail4r...@gmail.com
Jul 15, 2016, 1:44:21 PM7/15/16
to
I have got a Sony Wega Flat CRT TV – KV-AR21M83. One day its picture gone bad. Before this it never gave problem. Its picture started to give disturbance, coloration problem, colour bleeding and also sometimes gave noise. So, I stopped using the TV but occasionally I switched it on to see its situation. I called a technician from Sony but he told that he does not know that where the fault is and I’ll have to take it to service centre but I did not take it. One day I again switched it on but suddenly the disturbance increased. So I got frightened and turned it off. When I again switched it on the TV started to operate normally. But another problem came up. Whenever I switched on the TV and before the picture came on the screen, the TV displayed a green colour glow and also green coloured horizontal lines on the screen appeared for about 2 seconds and then vanished. The lines were not completely perpendicular. The lines were somewhat slanting, raised from the right side. The picture itself was fine but maybe with somewhat reduced colour accuracy. I felt it so. I could be wrong. Anyways, I used the TV for 1 - 2 months and then closed and covered it as I was using another TV.
After few months, I needed to use this TV again. So I switched it on. But the TV did not switch on. This was very much unexpected. Only the LED light on the TV blinks 8 times in red. I searched to see that do these blinks indicate something. I found out that 8 blinks as in my case indicates problem with audio IC IC406. But there was no audio problem in this TV. Only picture had issues.
So, what exactly has gone wrong in the TV? Is it the same component which is responsible for TV not switching on and the earlier picture problems?
I hope that nothing has happened to the picture tube as it is not replaceable. But If the fault does exist in some component of the picture tube then is that component replaceable / repairable or not?
Please Help. I am a novice.
After few months, I needed to use this TV again. So I switched it on. But the TV did not switch on. This was very much unexpected. Only the LED light on the TV blinks 8 times in red. I searched to see that do these blinks indicate something. I found out that 8 blinks as in my case indicates problem with audio IC IC406. But there was no audio problem in this TV. Only picture had issues.
So, what exactly has gone wrong in the TV? Is it the same component which is responsible for TV not switching on and the earlier picture problems?
I hope that nothing has happened to the picture tube as it is not replaceable. But If the fault does exist in some component of the picture tube then is that component replaceable / repairable or not?
Please Help. I am a novice.
jurb...@gmail.com
Jul 15, 2016, 8:42:56 PM7/15/16
to
In Sonys of that vintage they has alot of problems wit the CRTs. Usually the green for some reason. The gun gets weak and then shorts sometimes.
The AKB keeps the greyscale right until the green gun is too weak to do so. Then it is overdriven. This happens sometimes without notice.
The codes are not all that good. IF the main power supply is blown and it sees no voltage at the supply to the audio IC and thinks it is shorted. Like some cars, you read the codes ad they do not tell the whole story. You have to look over all the codes it actually has. In the US they standardised it, but not on TVs. But before that you had to interpret them by the model. And ironically if you got a code (even today) that says too lean alot of people think fuel filter or dirty injectors, but it really needs an O2 (lambda) sensor and is actually running too rich.
You actually could have a bad audio IC, you said it made a noise. But with the green on the screen with the (retrace) lines I suspect the CRT very greatly. The audio IC has nothing to do with the color.
If you really like CRT TVs, find a Toshiba somewhere. If the CRT is good after all these years it will probably be good for quite some time. Actually if you find a Sony from the 1980s that still looks good it might last a while.
The AKB keeps the greyscale right until the green gun is too weak to do so. Then it is overdriven. This happens sometimes without notice.
The codes are not all that good. IF the main power supply is blown and it sees no voltage at the supply to the audio IC and thinks it is shorted. Like some cars, you read the codes ad they do not tell the whole story. You have to look over all the codes it actually has. In the US they standardised it, but not on TVs. But before that you had to interpret them by the model. And ironically if you got a code (even today) that says too lean alot of people think fuel filter or dirty injectors, but it really needs an O2 (lambda) sensor and is actually running too rich.
You actually could have a bad audio IC, you said it made a noise. But with the green on the screen with the (retrace) lines I suspect the CRT very greatly. The audio IC has nothing to do with the color.
If you really like CRT TVs, find a Toshiba somewhere. If the CRT is good after all these years it will probably be good for quite some time. Actually if you find a Sony from the 1980s that still looks good it might last a while.
Bruce Esquibel
Jul 16, 2016, 7:25:43 AM7/16/16
to
mail4r...@gmail.com wrote:
> I hope that nothing has happened to the picture tube as it is not
> replaceable. But If the fault does exist in some component of the picture
> tube then is that component replaceable / repairable or not?
The picture tube in that thing is not the only part that isn't made anymore.
> I hope that nothing has happened to the picture tube as it is not
> replaceable. But If the fault does exist in some component of the picture
> tube then is that component replaceable / repairable or not?
I'd guess at this point (10-12 years old) that everything in the parts list
for it are marked NLA.
There's always a chance it's some nickle/dime part but taken under
consideration no one makes CRT sets anymore, I just don't see the point.
Even though that might of been in Sony's top line, the WEGA's, I'm pretty
confident that even one of those 32" no-name flat screens from Walmart they
have for $99 on sale "will blow it away".
The only money I'd put into it is paying someone to haul it away.
-bruce
b...@ripco.com
Micky
Jul 16, 2016, 3:10:01 PM7/16/16
to
On Fri, 15 Jul 2016 10:44:17 -0700 (PDT), mail4r...@gmail.com
wrote:
>I have got a Sony Wega Flat CRT TV – KV-AR21M83. One day its picture gone bad. Before this it never gave problem. Its picture started to give disturbance, coloration problem, colour bleeding and also sometimes gave noise. So, I stopped using the TV but occasionally I switched it on to see its situation. I called a technician from Sony but he told that he does not know that where the fault is and I’ll have to take it to service centre but I did not take it. One day I again switched it on but suddenly the disturbance increased. So I got frightened and turned it off. When I again switched it on the TV started to operate normally. But another problem came up. Whenever I switched on the TV and before the picture came on the screen, the TV displayed a green colour glow and also green coloured horizontal lines on the screen appeared for about 2 seconds and then vanished. The lines were not completely perpendicular. The lines were somewhat slanting, raised from the right side. The picture
I presume those are raster return lines, that would be blanked out if
things were working normally. The electron beam goes from one side
to the other illuminating the screen, but then it has to get back to
the first side without adding unwanted light to the picture. I
never did understand why the slope was more than two lines hight at
the high end, however.
>itself was fine but maybe with somewhat reduced colour accuracy. I felt it so. I could be wrong. Anyways, I used the TV for 1 - 2 months and then closed and covered it as I was using another TV.
>
>After few months, I needed to use this TV again. So I switched it on. But the TV did not switch on. This was very much unexpected. Only the LED light on the TV blinks 8 times in red. I searched to see that do these blinks indicate something. I found out that 8 blinks as in my case indicates problem with audio IC IC406. But there was no audio problem in this TV. Only picture had issues.
>
>So, what exactly has gone wrong in the TV?
Hold the TV closer to your computer so I can figure that out.
> Is it the same component which is responsible for TV not switching on and the earlier picture problems?
Maybe.
problem was the picture tube, and it never was. Old bad picture
tubes on black and white TVs have a silvery appearance, but I don't
know how to describe the same problem on color tvs. But it's not what
you've described.
wrote:
>I have got a Sony Wega Flat CRT TV – KV-AR21M83. One day its picture gone bad. Before this it never gave problem. Its picture started to give disturbance, coloration problem, colour bleeding and also sometimes gave noise. So, I stopped using the TV but occasionally I switched it on to see its situation. I called a technician from Sony but he told that he does not know that where the fault is and I’ll have to take it to service centre but I did not take it. One day I again switched it on but suddenly the disturbance increased. So I got frightened and turned it off. When I again switched it on the TV started to operate normally. But another problem came up. Whenever I switched on the TV and before the picture came on the screen, the TV displayed a green colour glow and also green coloured horizontal lines on the screen appeared for about 2 seconds and then vanished. The lines were not completely perpendicular. The lines were somewhat slanting, raised from the right side. The picture
things were working normally. The electron beam goes from one side
to the other illuminating the screen, but then it has to get back to
the first side without adding unwanted light to the picture. I
never did understand why the slope was more than two lines hight at
the high end, however.
>itself was fine but maybe with somewhat reduced colour accuracy. I felt it so. I could be wrong. Anyways, I used the TV for 1 - 2 months and then closed and covered it as I was using another TV.
>
>After few months, I needed to use this TV again. So I switched it on. But the TV did not switch on. This was very much unexpected. Only the LED light on the TV blinks 8 times in red. I searched to see that do these blinks indicate something. I found out that 8 blinks as in my case indicates problem with audio IC IC406. But there was no audio problem in this TV. Only picture had issues.
>
>So, what exactly has gone wrong in the TV?
> Is it the same component which is responsible for TV not switching on and the earlier picture problems?
>
>I hope that nothing has happened to the picture tube as it is not replaceable.
When there is no picture, most of the people I dealt with assumed the
>I hope that nothing has happened to the picture tube as it is not replaceable.
problem was the picture tube, and it never was. Old bad picture
tubes on black and white TVs have a silvery appearance, but I don't
know how to describe the same problem on color tvs. But it's not what
you've described.
Tim R
Jul 18, 2016, 8:30:52 AM7/18/16
to
On Saturday, July 16, 2016 at 7:25:43 AM UTC-4, Bruce Esquibel wrote:
>
> The only money I'd put into it is paying someone to haul it away.
>
> -bruce
> b...@ripco.com
And that's no longer simple. The trash pickup won't take it, and it now costs $25 per unit in my area to dispose of.
>
> The only money I'd put into it is paying someone to haul it away.
>
> -bruce
> b...@ripco.com
pf...@aol.com
Jul 18, 2016, 9:12:31 AM7/18/16
to
We have a very large Sony WEGA that followed us back from Saudi in 2005 (purchased in 2002), that has given us no trouble whatsoever. Interesting set, smart tuner, smart power-supply, almost nothing inside other than a (rather small) circuit board and the CRT, and a rather decent picture.
Peter Wieck
Melrose Park, PA
mail4r...@gmail.com
Jul 18, 2016, 11:00:02 AM7/18/16
to
On Saturday, July 16, 2016 at 6:12:56 AM UTC+5:30, jurb...@gmail.com wrote:
> In Sonys of that vintage they has alot of problems wit the CRTs. Usually the green for some reason. The gun gets weak and then shorts sometimes.
>
> The AKB keeps the greyscale right until the green gun is too weak to do so. Then it is overdriven. This happens sometimes without notice.
Thanks but what is AKB?
> In Sonys of that vintage they has alot of problems wit the CRTs. Usually the green for some reason. The gun gets weak and then shorts sometimes.
>
> The AKB keeps the greyscale right until the green gun is too weak to do so. Then it is overdriven. This happens sometimes without notice.
>
> The codes are not all that good. IF the main power supply is blown and it sees no voltage at the supply to the audio IC and thinks it is shorted. Like some cars, you read the codes ad they do not tell the whole story. You have to look over all the codes it actually has. In the US they standardised it, but not on TVs. But before that you had to interpret them by the model. And ironically if you got a code (even today) that says too lean alot of people think fuel filter or dirty injectors, but it really needs an O2 (lambda) sensor and is actually running too rich.
>
> You actually could have a bad audio IC, you said it made a noise. But with the green on the screen with the (retrace) lines I suspect the CRT very greatly. The audio IC has nothing to do with the color.
Maybe but that noise was due to picture disturbance. Yes, I think these codes do not always give the correct indication of fault or these codes have got even more meaning which is not given in the code paper.
> The codes are not all that good. IF the main power supply is blown and it sees no voltage at the supply to the audio IC and thinks it is shorted. Like some cars, you read the codes ad they do not tell the whole story. You have to look over all the codes it actually has. In the US they standardised it, but not on TVs. But before that you had to interpret them by the model. And ironically if you got a code (even today) that says too lean alot of people think fuel filter or dirty injectors, but it really needs an O2 (lambda) sensor and is actually running too rich.
>
> You actually could have a bad audio IC, you said it made a noise. But with the green on the screen with the (retrace) lines I suspect the CRT very greatly. The audio IC has nothing to do with the color.
>
> If you really like CRT TVs, find a Toshiba somewhere. If the CRT is good after all these years it will probably be good for quite some time. Actually if you find a Sony from the 1980s that still looks good it might last a while.
mail4r...@gmail.com
Jul 18, 2016, 11:18:55 AM7/18/16
to
On Sunday, July 17, 2016 at 12:40:01 AM UTC+5:30, Micky wrote:
> On Fri, 15 Jul 2016 10:44:17 -0700 (PDT), Ronald wrote:
>
> >I have got a Sony Wega Flat CRT TV – KV-AR21M83. One day its picture gone bad. Before this it never gave problem. Its picture started to give disturbance, coloration problem, colour bleeding and also sometimes gave noise. So, I stopped using the TV but occasionally I switched it on to see its situation. I called a technician from Sony but he told that he does not know that where the fault is and I’ll have to take it to service centre but I did not take it. One day I again switched it on but suddenly the disturbance increased. So I got frightened and turned it off. When I again switched it on the TV started to operate normally. But another problem came up. Whenever I switched on the TV and before the picture came on the screen, the TV displayed a green colour glow and also green coloured horizontal lines on the screen appeared for about 2 seconds and then vanished. The lines were not completely perpendicular. The lines were somewhat slanting, raised from the right side. The picture
>
> I presume those are raster return lines, that would be blanked out if
> things were working normally. The electron beam goes from one side
> to the other illuminating the screen, but then it has to get back to
> the first side without adding unwanted light to the picture. I
> never did understand why the slope was more than two lines hight at
> the high end, however.
Yes, it seems raster line. I have heard about them but don't understand them well. It looked like some filament in picture tube is glowing in green colour.
>
> >I have got a Sony Wega Flat CRT TV – KV-AR21M83. One day its picture gone bad. Before this it never gave problem. Its picture started to give disturbance, coloration problem, colour bleeding and also sometimes gave noise. So, I stopped using the TV but occasionally I switched it on to see its situation. I called a technician from Sony but he told that he does not know that where the fault is and I’ll have to take it to service centre but I did not take it. One day I again switched it on but suddenly the disturbance increased. So I got frightened and turned it off. When I again switched it on the TV started to operate normally. But another problem came up. Whenever I switched on the TV and before the picture came on the screen, the TV displayed a green colour glow and also green coloured horizontal lines on the screen appeared for about 2 seconds and then vanished. The lines were not completely perpendicular. The lines were somewhat slanting, raised from the right side. The picture
>
> I presume those are raster return lines, that would be blanked out if
> things were working normally. The electron beam goes from one side
> to the other illuminating the screen, but then it has to get back to
> the first side without adding unwanted light to the picture. I
> never did understand why the slope was more than two lines hight at
> the high end, however.
>
> >itself was fine but maybe with somewhat reduced colour accuracy. I felt it so. I could be wrong. Anyways, I used the TV for 1 - 2 months and then closed and covered it as I was using another TV.
> >
> >After few months, I needed to use this TV again. So I switched it on. But the TV did not switch on. This was very much unexpected. Only the LED light on the TV blinks 8 times in red. I searched to see that do these blinks indicate something. I found out that 8 blinks as in my case indicates problem with audio IC IC406. But there was no audio problem in this TV. Only picture had issues.
> >
> >So, what exactly has gone wrong in the TV?
>
> Hold the TV closer to your computer so I can figure that out.
>
> > Is it the same component which is responsible for TV not switching on and the earlier picture problems?
>
> Maybe.
> >
> >I hope that nothing has happened to the picture tube as it is not replaceable.
>
> When there is no picture, most of the people I dealt with assumed the
> problem was the picture tube, and it never was. Old bad picture
> tubes on black and white TVs have a silvery appearance, but I don't
> know how to describe the same problem on color tvs. But it's not what
> you've described.
> Yes, most likely the problem is not in the picture tube.
> >itself was fine but maybe with somewhat reduced colour accuracy. I felt it so. I could be wrong. Anyways, I used the TV for 1 - 2 months and then closed and covered it as I was using another TV.
> >
> >After few months, I needed to use this TV again. So I switched it on. But the TV did not switch on. This was very much unexpected. Only the LED light on the TV blinks 8 times in red. I searched to see that do these blinks indicate something. I found out that 8 blinks as in my case indicates problem with audio IC IC406. But there was no audio problem in this TV. Only picture had issues.
> >
> >So, what exactly has gone wrong in the TV?
>
> Hold the TV closer to your computer so I can figure that out.
>
> > Is it the same component which is responsible for TV not switching on and the earlier picture problems?
>
> Maybe.
> >
> >I hope that nothing has happened to the picture tube as it is not replaceable.
>
> When there is no picture, most of the people I dealt with assumed the
> problem was the picture tube, and it never was. Old bad picture
> tubes on black and white TVs have a silvery appearance, but I don't
> know how to describe the same problem on color tvs. But it's not what
> you've described.
mail4r...@gmail.com
Jul 18, 2016, 11:30:15 AM7/18/16
to
On Saturday, July 16, 2016 at 4:55:43 PM UTC+5:30, Bruce Esquibel wrote:
>
> > I hope that nothing has happened to the picture tube as it is not
> > replaceable. But If the fault does exist in some component of the picture
> > tube then is that component replaceable / repairable or not?
>
> The picture tube in that thing is not the only part that isn't made anymore.
> Yes, you are correct. Its very sad thought.
>
> > I hope that nothing has happened to the picture tube as it is not
> > replaceable. But If the fault does exist in some component of the picture
> > tube then is that component replaceable / repairable or not?
>
> The picture tube in that thing is not the only part that isn't made anymore.
> I'd guess at this point (10-12 years old) that everything in the parts list
> for it are marked NLA.
-Ronald
mail4r...@gmail.com
Jul 18, 2016, 1:29:54 PM7/18/16
to
The I asked at a TV repair shop. The person at the shop asked me that whether before the TV stopped working did it start giving green colour. I told him - Yes, green coloured line during statup for 2-3 second just before picture appeared. He told me it seems that its Extra High Tension Transformer has damaged. The transformer provides high voltage to the picture tube. To confirm, it took the TV to the shop. The person checked it using multi meter and confirmed that its EHT transformer has indeed damaged while the picture tube is fine. But even this transformer is no more available.
So, one technician told that its IC has damaged while another one told me its EHT transformer has damaged. Who is correct?
The symptoms - Disturbance in picture, later a fine picture but green glow and green raster line for 2-3 seconds during starup, then later on TV not starting up and blinking red light. These symtoms indicate an IC or Transformer failure? Please help.
Ralph Mowery
Jul 18, 2016, 2:32:57 PM7/18/16
to
In article <99f56e3f-87c0-4ca2...@googlegroups.com>,
mail4r...@gmail.com says...
given. Toss that old set out and buy a new one. If you can not repair
it yourself,, the repair price will be more than a new one almost on
labor alone even if they can get a part.
---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus
mail4r...@gmail.com says...
>
> The symptoms - Disturbance in picture, later a fine picture but green glow and green raster line for 2-3 seconds during starup, then later on TV not starting up and blinking red light.
These symtoms indicate an IC or Transformer failure? Please help.
With a new TV going for around $ 100 the best advice has already been
> The symptoms - Disturbance in picture, later a fine picture but green glow and green raster line for 2-3 seconds during starup, then later on TV not starting up and blinking red light.
These symtoms indicate an IC or Transformer failure? Please help.
given. Toss that old set out and buy a new one. If you can not repair
it yourself,, the repair price will be more than a new one almost on
labor alone even if they can get a part.
---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus
tom
Jul 18, 2016, 4:24:31 PM7/18/16
to
"Ralph Mowery" <rmower...@earthlink.net> wrote in message
news:MPG.31f6eaea3...@news.east.earthlink.net...
> In article <99f56e3f-87c0-4ca2...@googlegroups.com>,
> mail4r...@gmail.com says...
>>
>> The symptoms - Disturbance in picture, later a fine picture but green
>> glow and green raster line for 2-3 seconds during starup, then later on
>> TV not starting up and blinking red light.
> These symtoms indicate an IC or Transformer failure? Please help.
>
>
> With a new TV going for around $ 100 the best advice has already been
> given. Toss that old set out and buy a new one. If you can not repair
> it yourself,, the repair price will be more than a new one almost on
> labor alone even if they can get a part.
>
>
>
>
>
> ---
Not only that but a new LED TV will certainly use much less power than you
> mail4r...@gmail.com says...
>>
>> The symptoms - Disturbance in picture, later a fine picture but green
>> glow and green raster line for 2-3 seconds during starup, then later on
>> TV not starting up and blinking red light.
> These symtoms indicate an IC or Transformer failure? Please help.
>
>
> With a new TV going for around $ 100 the best advice has already been
> given. Toss that old set out and buy a new one. If you can not repair
> it yourself,, the repair price will be more than a new one almost on
> labor alone even if they can get a part.
>
>
>
>
>
> ---
old CRT unit. You should have changed it years ago and the electric savings
on you electric bill would have already paid for it.
jurb...@gmail.com
Jul 19, 2016, 3:43:13 AM7/19/16
to
>"Thanks but what is AKB? "
Automatic Kinescope Bias
jurb...@gmail.com
Jul 19, 2016, 3:49:32 AM7/19/16
to
You are getting fucked. You probably have a bad CRT and damaged circuits due to that. Return the favor and make them pay to dispose of the unit. just quit answering when they call The television is worthless.
Micky
Jul 19, 2016, 6:10:54 AM7/19/16
to
On Mon, 18 Jul 2016 07:59:59 -0700 (PDT), mail4r...@gmail.com
wrote:
>
>>
>> If you really like CRT TVs, find a Toshiba somewhere. If the CRT is good after all these years it will probably be good for quite some time. Actually if you find a Sony from the 1980s that still looks good it might last a while.
>
>Is Toshiba still manufacturing CRT TV?
No, that's why he said good "after all these years". If the tv works
now, and you turn it on and check, and provide a signal to see if the
picture and sound work, it will probably work several more years, he
says.
wrote:
>
>>
>> If you really like CRT TVs, find a Toshiba somewhere. If the CRT is good after all these years it will probably be good for quite some time. Actually if you find a Sony from the 1980s that still looks good it might last a while.
>
>Is Toshiba still manufacturing CRT TV?
now, and you turn it on and check, and provide a signal to see if the
picture and sound work, it will probably work several more years, he
says.
Micky
Jul 19, 2016, 6:17:24 AM7/19/16
to
On Mon, 18 Jul 2016 08:30:13 -0700 (PDT), mail4r...@gmail.com
wrote:
I don't know how you did this but you made your line look like it was
Bruce's line.
Here it is with only 1 level of quoting, like it should be
> Why Sony has done this? Is this to force customers to move to LCD TVs?
When my friend called a service man for her stove, I think it was, and
he said he couldn't get the part, he had taken out the part or she
took it out herself, she got the maker and part number off it and
bought it herself direct form whoever made it for the people who made
the stove. It cost about $3. I'm sure if the stove man had gotten
it, it would have been a bigger part with this part inside of it, and
would have been 30 or 60 dollars.
Whole boards and ic's won't be available new but they might be on
ebay.
>-Ronald
wrote:
Bruce's line.
Here it is with only 1 level of quoting, like it should be
> Why Sony has done this? Is this to force customers to move to LCD TVs?
he said he couldn't get the part, he had taken out the part or she
took it out herself, she got the maker and part number off it and
bought it herself direct form whoever made it for the people who made
the stove. It cost about $3. I'm sure if the stove man had gotten
it, it would have been a bigger part with this part inside of it, and
would have been 30 or 60 dollars.
Whole boards and ic's won't be available new but they might be on
ebay.
>-Ronald
Micky
Jul 19, 2016, 6:22:25 AM7/19/16
to
On Mon, 18 Jul 2016 16:25:11 -0400, "tom" <tmille...@verizon.net>
wrote:
>
>"Ralph Mowery" <rmower...@earthlink.net> wrote in message
>news:MPG.31f6eaea3...@news.east.earthlink.net...
>> In article <99f56e3f-87c0-4ca2...@googlegroups.com>,
>> mail4r...@gmail.com says...
>>>
>>> The symptoms - Disturbance in picture, later a fine picture but green
>>> glow and green raster line for 2-3 seconds during starup, then later on
>>> TV not starting up and blinking red light.
>> These symtoms indicate an IC or Transformer failure? Please help.
>>
>>
>> With a new TV going for around $ 100 the best advice has already been
>> given. Toss that old set out and buy a new one. If you can not repair
>> it yourself,, the repair price will be more than a new one almost on
>> labor alone even if they can get a part.
>>
That's true.
wrote:
>
>"Ralph Mowery" <rmower...@earthlink.net> wrote in message
>news:MPG.31f6eaea3...@news.east.earthlink.net...
>> In article <99f56e3f-87c0-4ca2...@googlegroups.com>,
>> mail4r...@gmail.com says...
>>>
>>> The symptoms - Disturbance in picture, later a fine picture but green
>>> glow and green raster line for 2-3 seconds during starup, then later on
>>> TV not starting up and blinking red light.
>> These symtoms indicate an IC or Transformer failure? Please help.
>>
>>
>> With a new TV going for around $ 100 the best advice has already been
>> given. Toss that old set out and buy a new one. If you can not repair
>> it yourself,, the repair price will be more than a new one almost on
>> labor alone even if they can get a part.
>>
>
>Not only that but a new LED TV will certainly use much less power than you
>old CRT unit.
That's true too.
>Not only that but a new LED TV will certainly use much less power than you
>old CRT unit.
ohg...@gmail.com
Jul 19, 2016, 7:22:09 AM7/19/16
to
Anyway, the smart money is on Jurb's guess. The CRT has some leakage and arcing causing the AKB circuit to have some fits. Eventually, the IC on the CRT socket board shorted out (not uncommon) and taking out the supply from the main board. If you replace the IC and resistor (IIRC), the TV will run until the new IC gets whacked again. Sony had a bulletin that would improve the life of the IC by adding a diode across an inductor on the CRT socket board, but that won't help a visually leaky CRT.
And while I agree that it's time to move on with regards to this particular Sony, anyone who thinks moving to a new TV will stop the bleeding is mistaken..
Bruce Esquibel
Jul 19, 2016, 8:07:49 AM7/19/16
to
mail4r...@gmail.com wrote:
>> Why Sony has done this? Is this to force customers to move to LCD TVs?
That's the easiest explanation to keep the conversation short.
>> Why Sony has done this? Is this to force customers to move to LCD TVs?
In reality, in my opinion anyway, I really doubt most tv's after the early
1990's just were not made to be repaired.
I remember somewhere in that time frame ordering a schematic for a recent
Zenith tv and just getting a 10 page "leaflet", with almost no information.
It had block diagrams in gray and white shading. Basically if the fault was
in one of the gray shaded areas, you replaced the whole module, not parts.
So even if you knew it was IC401 of the 201-778 module, you couldn't order
just the IC401. Once the tv's that used that module were out of production,
that pretty much spelled the end of repairing it.
The other thing I've seen is even if replacements are available, it's
possible they ended up in a landfill somewhere. Mits here in the states used
to be marketed as MGA, they pulled out of the North American region
somewhere in the 80's (I think), all the parts in the depot in California
for the national distribution got trashed.
Big tax write off. If they would of tried to auction or sell the stuff for
one cent on the dollar, the tax write off was more profitable.
Odds are, most of the replacement parts for that tv you want to fix were not
available the day after you bought it.
It sounds strange to say that but from the 1990's, it seems most sets were
replaced with models that bore little internally to the earlier generation
of them. Back in the 50's and 60's there were chassis that were in
production for years. Some were used in tabletop models as well as consoles
with little changes. Eventually they would come up with "new and improved"
with a total redesign, but that took years usually.
Since the mid 90's it seems to me most chassis designs got tossed as soon as
the new ones came out a year later. Yeah, of course there were parts that
carried over from one to another, but for the most part they didn't. And
again, even if you identified the bad part, it doesn't mean it was available
as a replacement part.
So basically you are under the incorrect assumption that there was a
stockpile of replacement parts where there was never one at all. Once that
tv was out of production and the warranties expired, that about wraps it up.
You got 10-12 years out of it, consider yourself lucky and move on.
-bruce
b...@ripco.com
Mark Zacharias
Jul 20, 2016, 6:54:19 AM7/20/16
to
"Bruce Esquibel" <b...@ripco.com> wrote in message
news:nml56j$al4$1...@remote5bge0.ripco.com...
> b...@ripco.com
<snip>
My shop was servicing crt sets to component level up until 2005 or so; and
even a few since. Sony and Pioneer provided complete schematics and training
materials for all of their crt-based sets to authorized service centers. So
did Thomson. (GE and RCA - ugh)
And although we did not regularly service Toshiba, Hitachi, etc, we were
able to get service data when we needed it.
Zenith did take the opposite view, and used mostly non-serviceable modules.
Mark Z.
news:nml56j$al4$1...@remote5bge0.ripco.com...
> mail4r...@gmail.com wrote:
>
>>> Why Sony has done this? Is this to force customers to move to LCD TVs?
>
> That's the easiest explanation to keep the conversation short.
>
> In reality, in my opinion anyway, I really doubt most tv's after the early
> 1990's just were not made to be repaired.
>
> I remember somewhere in that time frame ordering a schematic for a recent
> Zenith tv and just getting a 10 page "leaflet", with almost no
> information.
> It had block diagrams in gray and white shading. Basically if the fault
> was
> in one of the gray shaded areas, you replaced the whole module, not parts.
>
> So even if you knew it was IC401 of the 201-778 module, you couldn't order
> just the IC401. Once the tv's that used that module were out of
> production,
> that pretty much spelled the end of repairing it.
> > -bruce
>
>>> Why Sony has done this? Is this to force customers to move to LCD TVs?
>
> That's the easiest explanation to keep the conversation short.
>
> In reality, in my opinion anyway, I really doubt most tv's after the early
> 1990's just were not made to be repaired.
>
> I remember somewhere in that time frame ordering a schematic for a recent
> Zenith tv and just getting a 10 page "leaflet", with almost no
> information.
> It had block diagrams in gray and white shading. Basically if the fault
> was
> in one of the gray shaded areas, you replaced the whole module, not parts.
>
> So even if you knew it was IC401 of the 201-778 module, you couldn't order
> just the IC401. Once the tv's that used that module were out of
> production,
> that pretty much spelled the end of repairing it.
> b...@ripco.com
<snip>
My shop was servicing crt sets to component level up until 2005 or so; and
even a few since. Sony and Pioneer provided complete schematics and training
materials for all of their crt-based sets to authorized service centers. So
did Thomson. (GE and RCA - ugh)
And although we did not regularly service Toshiba, Hitachi, etc, we were
able to get service data when we needed it.
Zenith did take the opposite view, and used mostly non-serviceable modules.
Mark Z.
Bruce Esquibel
Jul 20, 2016, 9:10:14 AM7/20/16
to
Mark Zacharias <mark_za...@sbcglobal.net> wrote:
> My shop was servicing crt sets to component level up until 2005 or so; and
> even a few since. Sony and Pioneer provided complete schematics and training
> materials for all of their crt-based sets to authorized service centers. So
> did Thomson. (GE and RCA - ugh)
> And although we did not regularly service Toshiba, Hitachi, etc, we were
> able to get service data when we needed it.
> Zenith did take the opposite view, and used mostly non-serviceable modules.
I'm sure there are a 1001 exceptions to what I said, but you have to admit
> My shop was servicing crt sets to component level up until 2005 or so; and
> even a few since. Sony and Pioneer provided complete schematics and training
> materials for all of their crt-based sets to authorized service centers. So
> did Thomson. (GE and RCA - ugh)
> And although we did not regularly service Toshiba, Hitachi, etc, we were
> able to get service data when we needed it.
> Zenith did take the opposite view, and used mostly non-serviceable modules.
after the mid 1990's, things did change.
The key phase to what you wrote is "authorized service centers".
It used to be mostly independent shops that did repairs prior. Sure there
were the crooks and ones that did poor servicing but after the mid/late
90's, most (both good and not good) all disappeared leaving only the
authorized ones, mostly because of the parts distribution getting locked up.
Here in Chicago, not counting tv repairs shops, we used to have at least a
half dozen parts stores. Some handled GE, some Zenith, RCA, Panasonic. If
you walked into one for a part and they didn't have it in the back, they
would let you know when you could pick it up.
When those places started to go under one-by-one, the writing was pretty
much on the wall that independents in the repair business were going to fail
too. No parts, no repairs.
I mean it's like owning a car, sure you can take it into the dealer
everytime for service and know you are paying top dollar for it but
independents, even though they may not have the latest and greatest with
service info, they still could do a reasonable repair for a reasonable
price.
Why the tv manufacturers wanted to go down the same path does seem to
support the conspiracy of "they want you to buy new, not fix", but that's
just my opinion.
I mean I know the technology changes to where repairing some things just
doesn't make sense. Like take plasma and dlp tv's, those are barely 10 years
old now tech wise and are totally obsolete.
-bruce
b...@ripco.com
Ralph Mowery
Jul 20, 2016, 10:38:14 AM7/20/16
to
In article <rLIjz.54731$ye7....@fx42.iad>,
mark_za...@sbcglobal.net says...
schematics for many home electronic items.
Anyone could buy them .
mark_za...@sbcglobal.net says...
>
<snip>
>
> My shop was servicing crt sets to component level up until 2005 or so; and
> even a few since. Sony and Pioneer provided complete schematics and training
> materials for all of their crt-based sets to authorized service centers. So
> did Thomson. (GE and RCA - ugh)
>
> And although we did not regularly service Toshiba, Hitachi, etc, we were
> able to get service data when we needed it.
>
> Zenith did take the opposite view, and used mostly non-serviceable modules.
>
>
> Mark Z.
I have not looked for them in many years,but Sams Photo Facts had the
<snip>
>
> My shop was servicing crt sets to component level up until 2005 or so; and
> even a few since. Sony and Pioneer provided complete schematics and training
> materials for all of their crt-based sets to authorized service centers. So
> did Thomson. (GE and RCA - ugh)
>
> And although we did not regularly service Toshiba, Hitachi, etc, we were
> able to get service data when we needed it.
>
> Zenith did take the opposite view, and used mostly non-serviceable modules.
>
>
> Mark Z.
schematics for many home electronic items.
Anyone could buy them .
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