LCD inverter
 

Hi everyone. I recently got a 22" LCD monitor which has a bad backlight
inverter.. It is a Phillips LC200WX1 which is part of an all in one PC. This
monitor has 5 CCFL tubes in it. The inverter itself doesn't have a blown
fuse and it was making the backlight flash enough to read the screen.. But
now it is only making some noise.. Hi pitch vibration from the transformers.

Anyhow.. This thing has no visible electrolytics on it to change... Its all
SMD The model number on the inverter is KLS-LC200-F

Anyway..I've fixed a few simple inverters but I was thinking it might be
more simple to just replace the inverter with a couple of simple CCFL
inverters. Any thoughts or suggestions?


Thanks,
Mike

LCD inverter
 

On Dec 11, 10:37*am, "Michael Kennedy" wrote:
Hi everyone. I recently got a 22" LCD monitor which has a bad backlight
inverter.. It is a Phillips LC200WX1 which is part of an all in one PC. This
monitor has 5 CCFL tubes in it. *The inverter itself doesn't have a blown
fuse and it was making the backlight flash enough to read the screen.. But
now it is only making some noise.. Hi pitch vibration from the transformers.

Unfortunately, bad inverters can ruin backlight tubes. Your best bet
is
to get the manufacturer to rebuild it, because it might take
backlight,
inverter AND/OR other parts to complete a repair.

"generic" inverters sound like a good idea, but they aren't likely to
be dimmable or turn off for energy savings or do the other dozen
things the original item was responsible for.

LCD inverter
 

On Sat, 12 Dec 2009 03:37:42 +0900, "Michael Kennedy"
put finger to keyboard and composed:

Hi everyone. I recently got a 22" LCD monitor which has a bad backlight
inverter.. It is a Phillips LC200WX1 which is part of an all in one PC. This
monitor has 5 CCFL tubes in it. The inverter itself doesn't have a blown
fuse and it was making the backlight flash enough to read the screen.. But
now it is only making some noise.. Hi pitch vibration from the transformers.

Anyhow.. This thing has no visible electrolytics on it to change... Its all
SMD The model number on the inverter is KLS-LC200-F

FWIW, here are photos of a KLS-LC200-M inverter for a Toshiba 20HLV86
LCD TV:
http://photos.discount-merchant.com/...itemid=1003800

There is one available here for US$35:
http://www.discount-merchant.com/Pro...03800&CartID=0

Google gives plenty of hits for the M version.

DMTECH WQ20XT Inverter - KLS-LC200-M Rev.11 - 6632L-0257A - LC200WX1:
http://flattvparts.co.uk/index.php?m...oducts_id=1708

FWIW, here is a multipart service manual for a Philips 50 & 60 inch
projection DLP HD5 color TV chassis # CT2.0U RA:
http://www.eserviceinfo.com/download...2.0U%20RA.html

It contains a reference to "LC200WX1-SL01".

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.

LCD inverter
 

"whit3rd" wrote in message
...
On Dec 11, 10:37 am, "Michael Kennedy" wrote:
Hi everyone. I recently got a 22" LCD monitor which has a bad backlight
inverter.. It is a Phillips LC200WX1 which is part of an all in one PC.
This
monitor has 5 CCFL tubes in it. The inverter itself doesn't have a blown
fuse and it was making the backlight flash enough to read the screen.. But
now it is only making some noise.. Hi pitch vibration from the
transformers.

Unfortunately, bad inverters can ruin backlight tubes. Your best bet
is
to get the manufacturer to rebuild it, because it might take
backlight,
inverter AND/OR other parts to complete a repair.

"generic" inverters sound like a good idea, but they aren't likely to
be dimmable or turn off for energy savings or do the other dozen
things the original item was responsible for.


Well I did attempt to power it with 5 laptop inverters... They were not
strong enough to run the CCFLs and they were all a bit dim and after a few
minutes one inverter started to overheat. Anyhow I think the CCFLs are
good.


Thanks,

Mike

LCD inverter
 

"Franc Zabkar" wrote in message
...
On Sat, 12 Dec 2009 03:37:42 +0900, "Michael Kennedy"
put finger to keyboard and composed:

Hi everyone. I recently got a 22" LCD monitor which has a bad backlight
inverter.. It is a Phillips LC200WX1 which is part of an all in one PC.
This
monitor has 5 CCFL tubes in it. The inverter itself doesn't have a blown
fuse and it was making the backlight flash enough to read the screen.. But
now it is only making some noise.. Hi pitch vibration from the
transformers.

Anyhow.. This thing has no visible electrolytics on it to change... Its
all
SMD The model number on the inverter is KLS-LC200-F

FWIW, here are photos of a KLS-LC200-M inverter for a Toshiba 20HLV86
LCD TV:
http://photos.discount-merchant.com/...itemid=1003800

There is one available here for US$35:
http://www.discount-merchant.com/Pro...03800&CartID=0

Google gives plenty of hits for the M version.

DMTECH WQ20XT Inverter - KLS-LC200-M Rev.11 - 6632L-0257A - LC200WX1:
http://flattvparts.co.uk/index.php?m...oducts_id=1708

FWIW, here is a multipart service manual for a Philips 50 & 60 inch
projection DLP HD5 color TV chassis # CT2.0U RA:
http://www.eserviceinfo.com/download...2.0U%20RA.html

It contains a reference to "LC200WX1-SL01".

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.


Well crap.. Someone bouht that inverter while I was reasearching to see if
it would work.
Just a matter of 5 minutes...