Re: Samsung LE40C630 - can't power up, STBY light still on

I have cleaned the board and it looks much much better. Cant see any broken parts or source of the leaks :/.




Here is video while measuring PowerON pin.
[URL="https://www.youtube.com/watch?v=9fQ7teQycug"]https://www.youtube.com/watch?v=9fQ7teQycug[/URL]Re: Samsung LE40C630 - can't power up, STBY light still on

I have cleaned the board and it looks much much better. Cant see any broken parts or source of the leaks :/.



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Re: Samsung LE40C630 - can't power up, STBY light still on

"Power ON" pin voltage is as looped as other pins while connected to main board. "Power ON" is jumping from 0.1-0.2V to 0.7V and again and again every ~2 seconds. No matter if in the same time i'm pressing buttons on remote controller or touch panel.

I will try to clean this board with some brush and alcohol.

TV Model: Samsung LE40C630 (LE40C630K1W)
Main board: BN94-02747E
Power supply board: BN44-00340A

Main observations:
- Standby diode is enabled and the light is still
- nothing happens when trying to turn tv on
- ecery capacitors on PS board were replaced. I also get second power board - issues are the same.
- bottom of the main board is dirty (see pics)

Cable connecting main board with power board:
- when disconnected, backlight of the screen is turning on
- every pins on PS board has proper voltage
-...

Re: New Members - please post your introductions here

Hello everyone from Poland,
i'm software developer (iOS, php), hope to learn how some electronic hardware working and fix them