Re: 2 sec to off, 22" LG Flatron, W2252QT



The panel is only 2 years old, but has some pretty hard usage, since I game a lot. The ends of the bulbs do look burnt, just like a regular compact florescent, and might be the problem. I'll replace them and see what happens.

When I first tried testing the CCFL's, I plugged them into the power circuit, but didn't hook up any of the image circuits. Since the CCFL's didn't turn on at all, does this mean that you need a valid input for them to turn on? Or even flicker? To me, if you have your power circuit...

Re: 2 sec to off, 22" LG Flatron, W2252QT

Th3_uN1Qu3 = I went back, and I had not checked the transistors with the diode check, something I should have picked up on. After diode checking them all, they all measured out fine. I did check the diodes with the diode setting though. The high voltage transformer I checked on a 2000 ohm scale, from EL26 to 1 and getting a reading of 1798 ohms, and from EL27 to 4 with a reading of 971 ohms.
Looking into the transformer manufacture, they either don't carry it anymore, or don't list the specs on their website, and the only one...

Re: 2 sec to off, 22" LG Flatron, W2252QT

Done, thanks for quick reply, ill check everything when i get home later.

Re: 2 sec to off, 22" LG Flatron, W2252QT

Forgot to post pictures.. lol...

Hi guys,

First post, and first time trying to fix one of these.

Last night, my screen went dead during a movie i was watching, doing the whole on for 2 seconds, then off for several minutes, and after searching around the internet, i came upon this website.

Being at least a little knowledgeable, and always wanting to learn new things, i took it upon myself to start pulling this guy apart to take a look at the board.

The first thing i noticed is the burn marks on the Q305 Transistor, and checking the ohm value, it came up as 126 and 72....