Hi everyone,
I'm here because I have a dead end finding the fault on a LED TV Samsung UE32D5520
It turns on, but goes black after 2 seconds and the red led in front blinks twice, after this it restarts again, but does not restart always. Sometimes remains in the off state.
The power supply wich I am suspecting makes a changing buzzing sound, the source of the buzz is comming aprox from the middle of the power board where the transformer is located near the 68uf 200V cap.
Output voltages are 12.6 insted of 13.0 and 5.4 insted of 5.0 these are for the logic board.
LED screen light voltage is unstable between 124V and 135V. I don't know wich would be correct for this one. I don't have a service manual for it.
I suspect that because of this unstable voltage the protection circuit comes in and shuts the power off.
Atteched are 2 pictures of the board, back and front.
Can any one direct me in the right direction to repair this board?
Best regards,
Dawe
I'm here because I have a dead end finding the fault on a LED TV Samsung UE32D5520
It turns on, but goes black after 2 seconds and the red led in front blinks twice, after this it restarts again, but does not restart always. Sometimes remains in the off state.
The power supply wich I am suspecting makes a changing buzzing sound, the source of the buzz is comming aprox from the middle of the power board where the transformer is located near the 68uf 200V cap.
Output voltages are 12.6 insted of 13.0 and 5.4 insted of 5.0 these are for the logic board.
LED screen light voltage is unstable between 124V and 135V. I don't know wich would be correct for this one. I don't have a service manual for it.
I suspect that because of this unstable voltage the protection circuit comes in and shuts the power off.
Atteched are 2 pictures of the board, back and front.
Can any one direct me in the right direction to repair this board?
Best regards,
Dawe
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