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5v standby flickering

Power Supply Design and Troubleshooting - Badcaps Forums - www.badcaps.net
Hello, this is my first thread. I have a bad power supply on grunding lcd tv 32LXW 82-8729, psu is Beko LCD PSU-3. I found schematics, i will attach it. I recorded video of a problem on youtube and you have visual of problem. Everything i checked so far is ok.

On video, first measurement is on hot side, power supply for IC 1002, it is not steady, as you can see. Second measurement is on secondary side, 5vstb rail. TR1002 is buzzing, trying to start, but it has problem holding 5v.. Caps are ok, esr measured, some replaced, still problem persists.

Can you give me directions of what might be a problem?

From 1:16 on video, you can see it flickering.. Mobile camera is unable to capture it clearly, but its flickering all the time...

Date: Apr 8, 2017   


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