Q: How to fix colour distortion on Sony Trinitron?
Mark Tigwell
I did a dumb thing. I put my HiFi speakers to close to my TV. Now there is
an arc of discolourisation in the bottom right and left corners of the
picture (red goes green, green goes red, blue goes yellow etc.). I guess
this is from the magnetic field of the speakers. I have taken the speakers
away, but the distortion remains. Questions:
1. Will this go away in time, now that I have moved the speakers? (if so,
how long?)
2. If it won't go away, can it be fixed? How expensive will it be?
3. Is there anything I can do to fix it myself?
Thanks gurus :)
Mark Tigwell
Sydney, Australia
mtig...@yahoo.com
Jester
> 1. Will this go away in time, now that I have moved the speakers? (if so,
> how long?)
to start fluctuating in your local area I suppose it's not impossible!
> 2. If it won't go away, can it be fixed? How expensive will it be?
Yes, it is easily fixed. It requires "Degaussing," that is to have a strong
varying magnetic field applied to the metal slot mask in the CRT.
I don't know what your tv model is but you may have a "Degauss" button on
your remote control. If so press it! It may clear the problem straight away
or require several repeated applications wait for 5 mins between
applications.
If your set does not have internal degaussing, or it is not sufficient to
demagnetise the mask, you'll need to call an engineer out. He should have a
"Degaussing coil"
(I have one myself - but the air fare from Cardiff, Wales, UK to Sydney is
likely to be prohibitive!)
It will take just a few minutes to sort this out and will require no parts
cost.
> 3. Is there anything I can do to fix it myself?
See above
Mike
Ian James
degaussing themselves - guess who couldn't decide where to put his
speakers?). It could be that there is a problem with this. You might want to
get it checked when the enginner calls.
Jester <jes...@fun.e.bone> wrote in message
news:WzPl5.5368$Lv6....@news2-win.server.ntlworld.com...
Jester
Older and cheaper sets tend to have less powerful coils that are not
necessarily capable of the kind of field density required when a large
magnetic field has been induced (Such as by a 12" Bass unit)
More modern, high quality, (and generally the bigger,) sets (and the better
quality computer monitors,) have degauss capabilities that are not just
operateable by powering on the set - these are capable of reducing such
dense fields.
As the set was a Sony, I would expect it to have amongst the best of kit
inside!
Mike
Ian James <nospam....@btinternet.com> wrote in message
news:8n9cdi$a6p$1...@plutonium.btinternet.com...
Steve
Sometimes, all you need to do is turn the TV off entirely, Not in
standby mode though, just go up to it and turn on off from the power
button. Upon turning it on again (a minute or so later) the set might
degauss itself.
It's worth a try. It works on my TV, a Hitatchi 68cm, so it should work
on others.
Cheers,
Steve.
Sean Curtin
>As the set was a Sony, I would expect it to have amongst the best of kit
>inside!
Ha! Sony stuff is crap. You should see the disproportionate amount
of Sony stuff that comes across my bench. Sony stuff seems to be
more engineered for coolness than reliability, but it's great equipment
for the 2 years it lasts before it needs to be fixed.
...Sean.
>
>
>
haban...@yahoo.com
my 2 month old Mitsubishi HDTV is already dead. How's that for a piece
of crap?........................
/m
In article <8nbdfv$g5l$2...@mola.mote.org>,
se...@mote.org wrote:
> On Tue, 15 Aug 2000 00:48:37 +0100, Jester <jes...@fun.e.bone> wrote:
> >As the set was a Sony, I would expect it to have amongst the best of
kit
> >inside!
>
> Ha! Sony stuff is crap. You should see the disproportionate amount
> of Sony stuff that comes across my bench. Sony stuff seems to be
> more engineered for coolness than reliability, but it's great
equipment
> for the 2 years it lasts before it needs to be fixed.
>
> ...Sean.
> >
> >
> >
>
Sent via Deja.com http://www.deja.com/
Before you buy.
Steve Yeager
built in feature on every TV I've seen, but may be it doesn't work. It's
just a big coil around the tube connected to the line AC via varistor
(semiconductor resistor which increases resistance rapidly as it heats up).
This results in the decaying alternating magnetic field. You usually hear
the rapidly diminishing buzzing sound when your turn TV on - this is
degaussing circuit at work. So may be the varistor needs to be replaced, or
may be there is lost connection there.
For manual degaussing you can use one of the bulk erasers for magnetic
tapes. They used to sell them in the audio/video stores. Move it in
circles around the screen starting close, then slowly moving away while
circling.
toinfinity@beyond
making a circular motion from the tube and away
should remove all traces if not move the tv set left and right to see
difference
if tv is off long enough internal demagetizer should kick in
Mark Tigwell wrote:
> * Reply by e-mail appreciated *
>
> I did a dumb thing. I put my HiFi speakers to close to my TV. Now there is
> an arc of discolourisation in the bottom right and left corners of the
> picture (red goes green, green goes red, blue goes yellow etc.). I guess
> this is from the magnetic field of the speakers. I have taken the speakers
> away, but the distortion remains. Questions:
>
> 1. Will this go away in time, now that I have moved the speakers? (if so,
> how long?)
> 2. If it won't go away, can it be fixed? How expensive will it be?
> 3. Is there anything I can do to fix it myself?
>
James R Miller
> As the set was a Sony, I would expect it to have amongst the best of kit
> inside!
Hmmm. The Sony KV-32FX60 widescreen TV is absolutely stunning, for
both analogue and ONdigital display.
On the other hand, the Sony SLV-SF90UX VCR I just purchased is truly awful.
No bandwidth at all, and a variety of tearing effects at high contrast
features. Just a blurred mess. GBP 300+ straight down the pan. (*)
Never ever buy one of these, or an SE800 which has identical performance.
The SF90 is a quantum leap backwards about 25 years.
In contrast my 8 year old SLV-625 VCR was just wonderful until the micro
died. And you could program it from the remote.
Sony Customer Services just retreat into the usual denial. "We sell
zillions of these things and get no complaints". Same response from the
dealers.
(*) PS - anyone suggest a /decent/ VCR???
______________________________________________________________________________
Oh ... in respect of degaussing, I bought a video tape eraser very cheap from
Tandy many years ago which solved a serious tube magnetisation problem caused
by my (then) 2-year old pummelling the TV's mains switch ...
HTH.
--
==========================================================================
James R Miller WWW/PGP: http://www.jrmiller.demon.co.uk/
Cambridge, England Stardate: 2000 Aug 19 [Sat] 2119 utc
==========================================================================
Martin France
>"Jester" <jes...@fun.e.bone> wrote:
>> As the set was a Sony, I would expect it to have amongst the best of kit
>> inside!
> Hmmm. The Sony KV-32FX60 widescreen TV is absolutely stunning, for
> both analogue and ONdigital display.
> On the other hand, the Sony SLV-SF90UX VCR I just purchased is truly awful.
> No bandwidth at all, and a variety of tearing effects at high contrast
> features. Just a blurred mess. GBP 300+ straight down the pan. (*)
Take it back. Bring in trading standards in necessary. Go into the
shop on a Saturday morning and make a loud fuss. Oh well, whatever..
> Never ever buy one of these, or an SE800 which has identical performance.
> The SF90 is a quantum leap backwards about 25 years.
> In contrast my 8 year old SLV-625 VCR was just wonderful until the micro
> died. And you could program it from the remote.
> Sony Customer Services just retreat into the usual denial. "We sell
> zillions of these things and get no complaints". Same response from the
> dealers.
> (*) PS - anyone suggest a /decent/ VCR???
Well, so long as you don't want many features or anything (except
TBC), JVC's £200-300 S-VHS decks are pretty good (couple of models I
think, one without a front S connector). Perhaps not the very best in
standard mode for the price, but in S-mode on expensive tape, wow!
Moving up a little their D-VHS MPEG-2 encoding machine at £900 is
amazing. No digi out, no MPEG-2 in, but you can't have everything.
Marty
Jerry G.
the set is shut down for about 30 to 40 minutes, and then restarted
the degausing coil should demagnetize it. If it does not, you can
repeat the procedure a number of times.
If you turn the set off at night, and restart it the next day, the
degausing coil will give it a shot. Each day when you restart the
set, the coil will demagnetize the screen. Eventauly the screen
should turn back to normal if there was no damage to the CRT caused by
the magnet. I doubt you had any damage because you didn't put the
magnet right up to the face of the screen.
As for tape demagnetizers to use as an external degausing coil, this
is bad practice. The tape demagetizer is too strong, and if put too
close to the screen, it can damage the apature grill inside the tube.
I have had customers do this!
If you go to your local TV shop they should have a hand held degausing
coil. I am sure they will lend it to you if you first offer a nice
sized deposit in it. These coils, depending on the model cost from
about $60 to about $130 on the average.
You plug in and switch on the coil. You approach to the face of the
tube, and start moving around the face and parameter of the tube.
You then back off while doing this. At about 6 to 8 feet away from
the tube, you turn the coil purpendicular to the tube, and then switch
it off.
If the impurities do not go away, the tube is then most likely
damaged. In your case, I doubt this very much.
--
Jerry Greenberg
===========================================
Email: jerr...@hotmail.com
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============ Message Separator ===============
"Mark Tigwell" <mtig...@yahoo.com> wrote in message
news:8n8dhd$o83$1...@nina.pacific.net.au...
Sean Curtin
> (*) PS - anyone suggest a /decent/ VCR???
I've had good results with higher end consumer Mitsubishi and JVC stuff, esp. SVHS.
I love my Mitsubishi HSU-790, and I know that if it ever breaks (2.5 years now and
counting), it should be pretty straightforward to fix -- unlike Sony stuff.
...Sean.
Mark
The degaussing circuit in my Sony only kicks in when the main on/off switch
is used. If the set is switched on from standby, it has no effect.
Mark
Ian James <nospam....@btinternet.com> wrote in message
news:8n9cdi$a6p$1...@plutonium.btinternet.com...
> All TVs have a de-gaussing circuit (my Sony Trinitrons were VERY good at
> degaussing themselves - guess who couldn't decide where to put his
> speakers?). It could be that there is a problem with this. You might want
to
> get it checked when the enginner calls.
>
>
>
> Jester <jes...@fun.e.bone> wrote in message
> news:WzPl5.5368$Lv6....@news2-win.server.ntlworld.com...
> > Hi Mark,
Peter V Rawlings
When my 'KV-whatever-it-was' got HT-fatigue just out of it's
5-year-extended...., I decided to 'upgrade' to a Goodmans!!!
It might be crap, but it was cheap and I'm under no illusions of longevity!!
Meanwhile, it's surprisingly good crap and was well set-up in China! It
represents excellent value and when the widescreen hardware heat has passed
over, I expect to buy-in at a sensible price...when the Goodmans dies!
Just don't get me started on IDEK Iiyama monitors!!! That's when I get
really mad!
Cheers,
Pete.
"Sean Curtin" <se...@news.mote.org> wrote in message
news:8nbdfv$g5l$2...@mola.mote.org...
> On Tue, 15 Aug 2000 00:48:37 +0100, Jester <jes...@fun.e.bone> wrote:
> >As the set was a Sony, I would expect it to have amongst the best of kit
> >inside!
>