Is this compasitor bad?
The compasitor is raised from the board. No other visual damage to it so I'm wondering if this is whats keeping my tv from turning on
Hi @basworm86 ,
Not sure if this will work but worth a try anyway.
Disconnect the power from the TV and remove the back cover from the TV (if still on)
Disconnect the cable between the mainboard and the power board.
Reconnect the power to the TV.
The screen backlights should turn on full intensity and stay on. There will be no images because the mainboard has been disconnected
If they do then this proves that the backlights are OK and to some degree the power board is as well.
With the backlights on check the voltages on the connector where the mainboard cable was connected to on the power board and check if they are OK. The connector pin and voltage values should be printed on the power board close to the connector. Measure between an earth point (screwhead holding board to chassis) and the connector pin.
Be safety aware if you decide to try this as there is exposed lethal AC voltage on the power board, even though you are testing for lower value DC voltages. Also do not short out any pins with the meter probe by bridging the probe between two pins on the connector.
If the backlights don’t turn on or if they blink, then there is a problem either with the backlights, the power board or both.
Measure the voltage between each of the +VLED connector pins and earth. (find cable going from power board to LCD screen- usually only 6-8 wires to find +VLED connector on power board). I don’t know the TV but there may be 2 or 3 +VLED wires and 2 or 3 -VLED wires. If the voltage is >220V DC then there is a problem with the backlights. If the voltage is <50VDC then the problem is with the power board.
Hopefully a start
24 시간 전: 0
7일 전: 0
30일 전: 23
전체 시간: 23