Would greatly appreciate any help with my LG flat screen TV
LG 43UJ6200UA.CUSYLH Sound no picture. Flashlight test shows picture. Replaced power/LED driver board and main board. Same thing, sound, no picture. Six pin connection from power supply board to LED's shows .02 volts and .03 volts connected, and .02 volts and .03 volts with LED leads disconnected.
If LED's are blown, shouldn't new power boards LED connections have power with LED leads disconnected? Does this power/driver board not put out voltage to the LED's unless there is a draw? No support from new boards provider.
At the 14 pin connector on the power board, I have 11.8 volts at the five + marked connections when the TV is on standby. When the TV is "on" I have 3.45V at the PO connection, and 3.22V at the PDIM, and INVON connections. Wires and connectors between power and main board are good. I have not checked the LED strips yet. Trying to avoid removing screen to do so.
This TV only has one power board and one main board. There is no separate inverter/LED driver board or TCON board.
Thank you for any help or guidance
LG 43UJ6200UA.CUSYLH Sound no picture. Flashlight test shows picture. Replaced power/LED driver board and main board. Same thing, sound, no picture. Six pin connection from power supply board to LED's shows .02 volts and .03 volts connected, and .02 volts and .03 volts with LED leads disconnected.
If LED's are blown, shouldn't new power boards LED connections have power with LED leads disconnected? Does this power/driver board not put out voltage to the LED's unless there is a draw? No support from new boards provider.
At the 14 pin connector on the power board, I have 11.8 volts at the five + marked connections when the TV is on standby. When the TV is "on" I have 3.45V at the PO connection, and 3.22V at the PDIM, and INVON connections. Wires and connectors between power and main board are good. I have not checked the LED strips yet. Trying to avoid removing screen to do so.
This TV only has one power board and one main board. There is no separate inverter/LED driver board or TCON board.
Thank you for any help or guidance
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