Samsung TV UE32ES6100WXXN. No Standby light and power on.

Hello All,

I got a strange problem with my Samsung TV UE32ES6100WXXN.

PSU model = BN44-00517A

Main board model = BN41-01812(A)

TCON board model = BN41-01789A

Living in Europe

Observation:

No standby light when plugged into the power.

TV won't power on, with remote or button on tv.

What probably happend:

I was messing with the service menu, didn't change parameter.

Then somehow the menu was frozen so i disconnected the power.

Plugged in again (some sparks) and it didn't turn on.

Troubleshooting:

- First inspection for bad capacitors/damaged or burned spots = CHECKED AND OK

- Check the incoming voltage on the PSU. Measured at the two parallel big caps (100uf 450V) = 320V = OK (230V powerplug * √2 = 325V)

- Check control voltage. Measured at the connector cable between the PSU and Main. (CNM803). = All 0V except A5V = 5.4V and Power on/off = 0.25V

- Checked for hot components on the PSU. = All OK

- Plugged the main board cable out of the PSU, and checked the Voltage again. = Backlight is on (no display)! Voltage on the connector is now:

1. NC

2. NC

3. OD_on/Off = 4.29V

4. NC

5. GND

6. PWM_DIM2 = 3.24V

7. B13V = 12.99V

8. PWM_DIM1 = 3.24V

9. B13V = 12.99V

10. B13V = 12.99V

11. VAMP = 12.99V

12. BLU_on/Off = 3.02V

13. VAMP = 12.99V

14. GND

15. GND

16. GND

17. B5V = 5.39V

18. A5V = 5.4V

19. B5V = 5.39V

20. Power On/Off = 3.4V

- So the main board switches the PSU off. (Power on/off signal)

I forced the PSU on with a 1k ohm resistor between PS_ON and A5V (Pull UP). Checked the Main board voltages = 3V3 = OK, 1V8 = OK

Observation: Still no standby light or powering on. Only a red LED below on the main board (OP301). And the big microcontroller is a bit warmer.

- Also tried EEPROM reset. = still no progress.

Questions:

- Is there any solution for this problem?

- What did i miss to check/measure or try?

- What does the Red LED (OP301) on the main board means?

- Does it looks like a hardware or software (dead lock etc) failure?

- If no solution, which part do i need to buy to fix my tv? Im thinking the main board, because the voltages on PSU are OK.

I hope you guys can help me with my TV. I have currently no ideas left..

Thanks a lot!

Greetings,

Martijn

PS. I have solder and electronics skill.

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