Samsung UN55H6203AF
Got this TV from a friend, about 1+ old. Was working until picture went out but still had sound. However, since I got the TV I have not been able to reproduce any sound.
Boards
BN44-00774A Power
BN57-08808A Main
?? T-con ( have not taken apart the main cover to inspect, will do this soon )
Observations
I have tried to reproduce sound by changing channels, inputs and volume.
I used a flashlight and see nothing on the screen.
It seems the TV is responding to remote Power cycle. I can see Optical Jack light up red on the Main board and a Blue LED on the T-con board.
I see no bulging caps on the Power board.
I pulled the Power board and did some preliminary shorts test, nothing found
If there is a Standby Light, or any other indicator, in front of the TV I am not seeing it ever ON
Measurements
Power Board CM863 Confirmed working ( 8 to 13V ) in response to remote
Power Board CNM803 Confirmed working Pin 6 PS_ON in response to remote
Power Board CNM804 Confirmed Pins 1, 2 ,3, 5, 7 13V
Questions
What should be the voltages on Power Board connector CNL802 ( see attached picture ). When I measure these, I measure a fluctuating voltage starting at a max and dropping to a min, then repeats ( voltage measurement dependent on using GND or Connector M?-
Is a schematic for BN44-0774A available ?
Any other suggestions on how to continue to troubleshoot this TV ?
Got this TV from a friend, about 1+ old. Was working until picture went out but still had sound. However, since I got the TV I have not been able to reproduce any sound.
Boards
BN44-00774A Power
BN57-08808A Main
?? T-con ( have not taken apart the main cover to inspect, will do this soon )
Observations
I have tried to reproduce sound by changing channels, inputs and volume.
I used a flashlight and see nothing on the screen.
It seems the TV is responding to remote Power cycle. I can see Optical Jack light up red on the Main board and a Blue LED on the T-con board.
I see no bulging caps on the Power board.
I pulled the Power board and did some preliminary shorts test, nothing found
If there is a Standby Light, or any other indicator, in front of the TV I am not seeing it ever ON
Measurements
Power Board CM863 Confirmed working ( 8 to 13V ) in response to remote
Power Board CNM803 Confirmed working Pin 6 PS_ON in response to remote
Power Board CNM804 Confirmed Pins 1, 2 ,3, 5, 7 13V
Questions
What should be the voltages on Power Board connector CNL802 ( see attached picture ). When I measure these, I measure a fluctuating voltage starting at a max and dropping to a min, then repeats ( voltage measurement dependent on using GND or Connector M?-
Is a schematic for BN44-0774A available ?
Any other suggestions on how to continue to troubleshoot this TV ?
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