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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

Reply to
Michael Kennedy
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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.

Reply to
whit3rd

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

FWIW, here are photos of a KLS-LC200-M inverter for a Toshiba 20HLV86 LCD TV:

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There is one available here for US$35:

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Google gives plenty of hits for the M version.

DMTECH WQ20XT Inverter - KLS-LC200-M Rev.11 - 6632L-0257A - LC200WX1:

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FWIW, here is a multipart service manual for a Philips 50 & 60 inch projection DLP HD5 color TV chassis # CT2.0U RA:

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It contains a reference to "LC200WX1-SL01".

- Franc Zabkar

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

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

Reply to
Michael Kennedy

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

Reply to
Michael Kennedy

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