Red light blinking 10 times, TV do not turn on
Samsung TV ue42f5000awxxh
Power supply L42SFV_DSM (BN44-00609F)
Visuallly I do not see any deviation on boards.
After unplugging the main board I have follwing voltage results:
1 . 7,64V 2. 3,03V 3. 7,64V 4. 0 5. 7,53V 6. 2,6V 7. 7,4V 8. 0 9. 0 10. 0 11. 4,75V 12. 5,23V 13. 4,76V 14. 3,27V
What shoould I change? Power board or main board? Where to buy?
Thanks in advance.
Update (10/01/2020)
Hello Jayeff,
as far as I remember, do not turn on at all, but I am going to check again in the afternoon.
Here is the requirement for voltages:
Update (10/01/2020)
Hello Jayeff,
here is the results:
- 0V 2. 0V 3. 145V 4. 0V 5. 0V 6. 165V 7. 0V 8. 0V 9. 145V 10. 0V 11. 0V 12. 160V 13. 0V 14. 0V 15. 0V 16. 0V
Hi @diwi ,
When you unplugged the mainboard (presumably from the power board) did the screen backlights turn on and stay or did they blink or not turn on at all?
What voltages are printed on the power board near the cable connector that goes to the mainboard? These are the voltages that should be read at the power board because if the mainboard is disconnected from the power board the power board should be turned on full to supply operating voltages to the mainboard and the LED backlights
由 jayeff 完成的
Hi @diwi ,
I can't see any of your voltage readings which should be, as being near 13V DC so check the voltage at the LED power connector on the power board. Do this with the mainboard disconnected from the power board.
If you read >250V DC (between +ve LED power lead and earth) then there is a problem either in the LED array or the connection to the LED array.
If you read <50V DC then there is a problem in the power board.
由 jayeff 完成的
Hi @diwi ,
The readings aren't making much sense to me as looking at your image the +ve supply is on pins 4, 6, 10 & 12 yet your voltages appear to be on 3, 6, 9 &12.
Also as your model is the 42" the voltages should be 147V and 195V so assuming that the 145V is close enough the other two are too low but even so the backlights should be on unless there should also be a signal voltage on pins 15 & 16. Haven't seen those two leads mentioned before on any Samsung power boards that I've worked on but that's not saying much ;-)
Perhaps maybe get a backlight tester -examples only and verify that the backlights are working as you don't need to power on the TV to test them. If they're OK then maybe try sourcing a replacement power board from a supplier that accepts returns just in case it isn't the problem
由 jayeff 完成的