Samsung UN50MU6300FXZA with no power showing

[blake.s]

I have a samsung un50mu6300fxza with no red led status showing up. Tv does not power up, show backlights or anything.

I ran tests on pin set CNM803. Voltages are below

ANA_DIM 2 / FAIL_COUNT 1 - 0v
OD_ON/OFF 4 / A13V 3 - 8.9v
PWM_BLU 6 / A13V 5 - 8.9v
POWER_ON 8 / A13V 7 - 8.9v
GND 10 / A13V 9 - 8.9v
GND 12 / GND 11 - 0v


Edit: TV set just randomly came on with power showing it is going through. Still no backlights but the led light shows red.
Edit 2: Now set has backlights lit but no picture coming to screen. However, tv took atleast 30 mins to come up with power going through it and when power is unplugged it repeats the same process.

[R_J]

Re: Samsung UN50MU6300FXZA with no power showing

On these power supplies, the A13V will be around 8 volts in standby, You can check the backlight voltage (275v) across CH1 when the tv is first turned on. If the voltage is there, check the two led strings with your tester

[blake.s]

Re: Samsung UN50MU6300FXZA with no power showing

The power came on and when the tv finally powered on it showed the voltage when it was turned on. The backlights did come on and voltage was 275v. There is just no picture on the tv now.

[CapLeaker]

Re: Samsung UN50MU6300FXZA with no power showing

if the tv does not power up, it could be the eeprom, also try disconnecting the wifi board.