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Replacing Monitor CCFL with LEDs?
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~misfit~
Aug 17, 2015, 3:21:03 AM8/17/15
to
Has anyone done this? My beloved Dell 2007FP (20" 4:3 UXGA [1600x1200] IPS)
monitor is getting dim. I've been having to use it on full brightness for a
while now and even then it's not bright and takes a while to reach full
brightness, maybe 15 seconds.
I'm not rich but could swing a few hundred for a new monitor if I absolutely
had to. However I've been spoiled with this monitor and nothing that I can
afford even comes close to being as good. I've got a multimeter, soldering
iron and more than half a brain and would much prefer to keep this montior
out of a landfill.
I've seen a few kits for sale to do the job (this is a cheap one
http://www.aliexpress.com/item/15-23-Universal-Highlight-Dimable-LED-Backlight-Lamps-Update-kit-Adjustable-LED-Light-For-LCD-Monitor/32252220243.html )
but would feel better knowing that someone else here had successfully done
this mod. Also I'm concerned that, as IPS monitors don't transmit as much
light as TN monitors I'll need a brighter than usual backlight.
Thoughts?
--
Shaun.
"Humans will have advanced a long, long way when religious belief has a cozy
little classification in the DSM*."
David Melville (in r.a.s.f1)
(*Diagnostic and Statistical Manual of Mental Disorders)
monitor is getting dim. I've been having to use it on full brightness for a
while now and even then it's not bright and takes a while to reach full
brightness, maybe 15 seconds.
I'm not rich but could swing a few hundred for a new monitor if I absolutely
had to. However I've been spoiled with this monitor and nothing that I can
afford even comes close to being as good. I've got a multimeter, soldering
iron and more than half a brain and would much prefer to keep this montior
out of a landfill.
I've seen a few kits for sale to do the job (this is a cheap one
http://www.aliexpress.com/item/15-23-Universal-Highlight-Dimable-LED-Backlight-Lamps-Update-kit-Adjustable-LED-Light-For-LCD-Monitor/32252220243.html )
but would feel better knowing that someone else here had successfully done
this mod. Also I'm concerned that, as IPS monitors don't transmit as much
light as TN monitors I'll need a brighter than usual backlight.
Thoughts?
--
Shaun.
"Humans will have advanced a long, long way when religious belief has a cozy
little classification in the DSM*."
David Melville (in r.a.s.f1)
(*Diagnostic and Statistical Manual of Mental Disorders)
Richard
Aug 17, 2015, 8:50:09 AM8/17/15
to
On 17/08/2015 19:20, ~misfit~ wrote:
> Has anyone done this? My beloved Dell 2007FP (20" 4:3 UXGA [1600x1200] IPS)
> monitor is getting dim. I've been having to use it on full brightness for a
> while now and even then it's not bright and takes a while to reach full
> brightness, maybe 15 seconds.
>
> I'm not rich but could swing a few hundred for a new monitor if I absolutely
> had to. However I've been spoiled with this monitor and nothing that I can
> afford even comes close to being as good. I've got a multimeter, soldering
> iron and more than half a brain and would much prefer to keep this montior
> out of a landfill.
>
> I've seen a few kits for sale to do the job (this is a cheap one
> http://www.aliexpress.com/item/15-23-Universal-Highlight-Dimable-LED-Backlight-Lamps-Update-kit-Adjustable-LED-Light-For-LCD-Monitor/32252220243.html )
> but would feel better knowing that someone else here had successfully done
> this mod. Also I'm concerned that, as IPS monitors don't transmit as much
> light as TN monitors I'll need a brighter than usual backlight.
>
> Thoughts?
Try replacing just the inverter first of all. A replacement one can
> Has anyone done this? My beloved Dell 2007FP (20" 4:3 UXGA [1600x1200] IPS)
> monitor is getting dim. I've been having to use it on full brightness for a
> while now and even then it's not bright and takes a while to reach full
> brightness, maybe 15 seconds.
>
> I'm not rich but could swing a few hundred for a new monitor if I absolutely
> had to. However I've been spoiled with this monitor and nothing that I can
> afford even comes close to being as good. I've got a multimeter, soldering
> iron and more than half a brain and would much prefer to keep this montior
> out of a landfill.
>
> I've seen a few kits for sale to do the job (this is a cheap one
> http://www.aliexpress.com/item/15-23-Universal-Highlight-Dimable-LED-Backlight-Lamps-Update-kit-Adjustable-LED-Light-For-LCD-Monitor/32252220243.html )
> but would feel better knowing that someone else here had successfully done
> this mod. Also I'm concerned that, as IPS monitors don't transmit as much
> light as TN monitors I'll need a brighter than usual backlight.
>
> Thoughts?
often get a little more out of a dying tube than the one that it came
with which is made predominanlty for longer service life.
Avon Kerr
Aug 18, 2015, 6:03:57 AM8/18/15
to
On Mon, 17 Aug 2015 19:20:59 +1200, ~misfit~ wrote:
> )
> but would feel better knowing that someone else here had successfully
> done this mod. Also I'm concerned that, as IPS monitors don't transmit
> as much light as TN monitors I'll need a brighter than usual backlight.
>
> Thoughts?
Humm.. sorry, no this is not something I have attempted but I feel your
> )
> but would feel better knowing that someone else here had successfully
> done this mod. Also I'm concerned that, as IPS monitors don't transmit
> as much light as TN monitors I'll need a brighter than usual backlight.
>
> Thoughts?
pain as I also have a DEL SE198WFP that is starting to fade ;(
Good luck if you opt to do it, let me know how you get on.
Best, Paul
--
Agency News | news.bbs.geek.nz
~misfit~
Aug 18, 2015, 10:52:06 PM8/18/15
to
I think that I need to open it up and have a good look. From what I've found
in searches there is likely to be more than one inverter as there are
probably CCFLs on at least two sides of the panel. (Lots of 'likely's and
'maybe's, looking will resolve that.)
Also from what I've been able to find if the lack of brightness is even then
it's possibly an issue such as the power supply going bad (capacitor
plague?). Either than or simply aging of CCFLs. If there are multiple
inverters then the evenness of the light probably rules out one of them
going bad.
It seems there's nothing else for it but to open it and start probing
around. I didn't really want that option as it means it'll be out of
commision for a while. Also it seems that, if I do go with LED replaement I
may need mutiple kits as larger IPS panels can have multiple CCFLs - I've
heard of one that has 16! That's extreme though but this could easilly have
four or eight.
More work than I first thought.
Cheers,
~misfit~
Aug 18, 2015, 10:57:00 PM8/18/15
to
accounts of replacing CCFLs with LEDs that I can find are in laptops panels
which usually only have one CCFL. Apparently my IPS UXGA 20" desktop monitor
could have two four or eight CCFLs - the only way to know is to open it. :-/
As the 2007FP has/d quite a cult following I was hoping to find more info on
the subject of them having a dimming display.
Oh well. ;)
Cheers,
Bruce Sinclair
Aug 19, 2015, 12:49:55 AM8/19/15
to
In article <mr0r6k$oc3$1...@dont-email.me>, "~misfit~" <shaun.at...@gmail.com> wrote:
>Once upon a time on usenet Avon Kerr wrote:
>> On Mon, 17 Aug 2015 19:20:59 +1200, ~misfit~ wrote:
>>
>>> )
>>> but would feel better knowing that someone else here had successfully
>>> done this mod. Also I'm concerned that, as IPS monitors don't
>>> transmit as much light as TN monitors I'll need a brighter than
>>> usual backlight.
>>>
>>> Thoughts?
>>
>> Humm.. sorry, no this is not something I have attempted but I feel
>> your pain as I also have a DEL SE198WFP that is starting to fade ;(
>>
>> Good luck if you opt to do it, let me know how you get on.
>>
>> Best, Paul
>
>Hi Paul, see my reply to Richard for where things stand at the moment. Most
>accounts of replacing CCFLs with LEDs that I can find are in laptops panels
>which usually only have one CCFL. Apparently my IPS UXGA 20" desktop monitor
>could have two four or eight CCFLs - the only way to know is to open it. :-/
>
>As the 2007FP has/d quite a cult following I was hoping to find more info on
>the subject of them having a dimming display.
>
>Oh well. ;)
What aboutthat web site that buys things and takes them apart just because
>Once upon a time on usenet Avon Kerr wrote:
>> On Mon, 17 Aug 2015 19:20:59 +1200, ~misfit~ wrote:
>>
>>> )
>>> but would feel better knowing that someone else here had successfully
>>> done this mod. Also I'm concerned that, as IPS monitors don't
>>> transmit as much light as TN monitors I'll need a brighter than
>>> usual backlight.
>>>
>>> Thoughts?
>>
>> Humm.. sorry, no this is not something I have attempted but I feel
>> your pain as I also have a DEL SE198WFP that is starting to fade ;(
>>
>> Good luck if you opt to do it, let me know how you get on.
>>
>> Best, Paul
>
>Hi Paul, see my reply to Richard for where things stand at the moment. Most
>accounts of replacing CCFLs with LEDs that I can find are in laptops panels
>which usually only have one CCFL. Apparently my IPS UXGA 20" desktop monitor
>could have two four or eight CCFLs - the only way to know is to open it. :-/
>
>As the 2007FP has/d quite a cult following I was hoping to find more info on
>the subject of them having a dimming display.
>
>Oh well. ;)
they can ? Can't recall now what it's called, but that might have something
you can use ? :)
~misfit~
Aug 19, 2015, 2:49:12 AM8/19/15
to
but a Google search using the same phrase gave me several hits, a couple of
which look very promising. I should have tried that already. ;)
It looks like I've got a few hours of reading and saving info ahead of me.
~misfit~
Aug 19, 2015, 5:30:38 AM8/19/15
to
Once upon a time on usenet ~misfit~ wrote:
> Once upon a time on usenet Bruce Sinclair wrote:
[snip]
"I've done a few "repairs" in the past where I had replaced failed
electrolytic capacitors in other monitors/electronic devices. These were
always easy to spot and replace. But the complexity of this 2007fpb is on a
completely different level and frankly was overwhelming. I read through
several forums and threads and was intimidated by the sheer number of
probable issues and related components."
That doesn't sound good! Also there are multiple PCBs in these monitors. I
don't know if membership is needed to view this pic
http://www.badcaps.net/forum/attachment.php?attachmentid=40129&d=1336880355
I'm starting to think that turning the lights out and drawing the curtains
might be the best option for the near future. :-/ LOL! Sounds like the story
of my life.....
> Once upon a time on usenet Bruce Sinclair wrote:
[snip]
>> What aboutthat web site that buys things and takes them apart just
>> because
>> they can ? Can't recall now what it's called, but that might have
>> something
>> you can use ? :)
>
> Thanks for the prod. I'd searched youtube for "2007FP teardown" with
> no luck but a Google search using the same phrase gave me several
> hits, a couple of which look very promising. I should have tried that
> already. ;)
> It looks like I've got a few hours of reading and saving info ahead
> of me.
From a post in a thread on the Badcaps forums about this monitor;
>> because
>> they can ? Can't recall now what it's called, but that might have
>> something
>> you can use ? :)
>
> Thanks for the prod. I'd searched youtube for "2007FP teardown" with
> no luck but a Google search using the same phrase gave me several
> hits, a couple of which look very promising. I should have tried that
> already. ;)
> It looks like I've got a few hours of reading and saving info ahead
> of me.
"I've done a few "repairs" in the past where I had replaced failed
electrolytic capacitors in other monitors/electronic devices. These were
always easy to spot and replace. But the complexity of this 2007fpb is on a
completely different level and frankly was overwhelming. I read through
several forums and threads and was intimidated by the sheer number of
probable issues and related components."
That doesn't sound good! Also there are multiple PCBs in these monitors. I
don't know if membership is needed to view this pic
http://www.badcaps.net/forum/attachment.php?attachmentid=40129&d=1336880355
I'm starting to think that turning the lights out and drawing the curtains
might be the best option for the near future. :-/ LOL! Sounds like the story
of my life.....
~misfit~
Aug 19, 2015, 8:45:17 AM8/19/15
to
Once upon a time on usenet ~misfit~ wrote:
> Once upon a time on usenet ~misfit~ wrote:
[snipped]
>> It looks like I've got a few hours of reading and saving info ahead
>> of me.
>
> From a post in a thread on the Badcaps forums about this monitor;
>
> "I've done a few "repairs" in the past where I had replaced failed
> electrolytic capacitors in other monitors/electronic devices. These
> were always easy to spot and replace. But the complexity of this
> 2007fpb is on a completely different level and frankly was
> overwhelming. I read through several forums and threads and was
> intimidated by the sheer number of probable issues and related
> components."
> That doesn't sound good! Also there are multiple PCBs in these
> monitors. I don't know if membership is needed to view this pic
> http://www.badcaps.net/forum/attachment.php?attachmentid=40129&d=1336880355
>
> I'm starting to think that turning the lights out and drawing the
> curtains might be the best option for the near future. :-/ LOL!
> Sounds like the story of my life.....
I've managed to find out how many CCFL tubes these 2007FPb monitors employ;
>> of me.
>
> From a post in a thread on the Badcaps forums about this monitor;
>
> "I've done a few "repairs" in the past where I had replaced failed
> electrolytic capacitors in other monitors/electronic devices. These
> were always easy to spot and replace. But the complexity of this
> 2007fpb is on a completely different level and frankly was
> overwhelming. I read through several forums and threads and was
> intimidated by the sheer number of probable issues and related
> components."
> That doesn't sound good! Also there are multiple PCBs in these
> monitors. I don't know if membership is needed to view this pic
> http://www.badcaps.net/forum/attachment.php?attachmentid=40129&d=1336880355
>
> I'm starting to think that turning the lights out and drawing the
> curtains might be the best option for the near future. :-/ LOL!
> Sounds like the story of my life.....
Six. Three at the top and three at the bottom, all driven from a single
triple-channel inverter.
They are extremely complex and difficut to work on from what I've read so
I'm starting to think that the best bet will be to replace the electrolytic
caps in the power supply then replace the CCFLs with LED kits but fit a
small pot for brightness control rather than try to trace and connect to the
on-board brightness signals (apparently there's a brightness feedback as
well as contol signal).
More reading tomorrow.....
robin....@gmail.com
May 4, 2018, 8:23:02 AM5/4/18
to
Thanks!
~misfit~
May 5, 2018, 11:47:15 PM5/5/18
to
> I'm looking in to similar solutions too.. Did you managed to get
> forwards with your project?
>
> Thanks!
Hi. No, since I got no feedback from someone who'd done it (which I was
> forwards with your project?
>
> Thanks!
hoping for) I joined the ranks of the obedient consumers and bought another
monitor. I've slowly got used to 'short-screen' monitors
That said I have more electronics knowledge now so, if presented with the
problem today would definately go ahead with it. I actually still have my
two semi-retired 2007FPb monitors but I think they'll likely go out for the
next inorganic rubbish collection.
All the best with your project!
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