LG 50PV400 Have Sound but No Picture - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 1 Old Today, 11:21 AM - Thread Starter
Join Date: Jul 2015
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LG 50PV400 Have Sound but No Picture

Ok,about 2 weeks ago the tv all of a sudden had a dark thin vertical line from top to bottom,almost in the middle,just a little more to the left.It is a bedroom tv so didn't much care,as was still watchable.

Well last night we were watching it and all of a sudden the display went dark,like it was turned off...but the sound was still working...uh oh....turned it off,left it for a minute,tried it again..same thing...sound works but nothing on the screen...all buttons work as usual,can turn vol up\down..tv turns on\off ok...just no picture..tried dif input,same thing.

Doing some research this sounds like a bad y-sus or bad y-buffers,correct..??...I've got the back off the tv,and have used my DMM to test the fuses on the y-sus board,and the fuses on the PSU board,all ohm out fine.

Can someone please chime in with some more tests i can perform before ordering some boards up...this has 2 buffer boards connected to each other with a small ribbon cable...is there a way to test the buffer boards
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