LG 60LN549e no display after LG logo on power up
TV shows the LG logo on power up then is black. With a flashlight I can see display when accessing menu mode. The TV has sound. I have the back off and there are no bulging caps. The leds flash when turning on the tv (probably during the logo display).
how do I determine driver board, power board or led problem?
driver board connection
testor
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8 comentarios
Any idea of the power supply voltages?
Driver board voltages?
- de Steve Prange
looks like 24 v from your power supply ~150-180 VDC on your LED board
- de oldturkey03
Where do I attach the led tester
Vled
Vout
Fb+
Fb-
Thought I could use the testor on the connector to see if the leds light?
- de Steve Prange
Go with 1/3 and 5/7 there are more than 1 channel. See what happens
- de oldturkey03
I played a video from my iPad into the input 3. Turned on the tv, I see the video on the screen with the flashlight. Sound works well. Placed the led tester across 1/3 and 5/7. See leds light from the back and 112 v across each pair of points. I can’t see the picture with the leds lit because I don’t have enough hands to lift it and look while holding the test leads on. I’m thinking this means my led driver board is bad? Board on image 1, 4, and 6
- de Steve Prange
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