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.
Es esta una buena pregunta?