Question about LG 42LC7D-UB Television
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Posted on Jan 02, 2017
Sounds like the y sus was blown out but what cause it. Were you careful when you were checking voltages? As long as you didn't short 2 components together, your y sus should be fine. Unless the y buffer up and/or down blew them out. Even the panel could blow it.
Basically you need a scope to adjust the ramps and everything. You can adjust VA and VS with a meter. If you don't have access to a scope, then just start changing the ramps etc by eye. It might take a little bit to get but eventually you'll get it.
Posted on Mar 14, 2010
I have the same problem the pic went out but have sound. where do i go to get the Yboard? do i need a special number off of it or something? I took it to repair shop and he said it would be like 500 dollarss to repair. but i see all kind of yboards on ebay for like 150?? how do I know what one to buy?
Posted on Aug 08, 2010
If you have a bubbled on you r Y sus board you need to replace the cap if you can find it or you can
replace the the Y sus board. 6871QYH029A SUS Y
Posted on Nov 02, 2010
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This is a common problem on Plasma's. This is an issue with Zsus and Ysus board. You need to inspect and replace both the boards.This is not an issue with power supply or ' caps'.
Let me know,if needed further assistance.
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Posted on Nov 21, 2010
SOURCE: LG 42PG20 Plasma blew a
Once the voltage the television is connected to is very high, there is a very high tendency that the board will blow again, and it might not be as soon as you replace the board.
You will still have to replace the board, but you will try to get a board with higher capacitance on the capacitors. That way if exposed to higher voltage it wont get bad.
Also a tip is for you to get a step down transformer for your television or a stabilizer so as for the television not to be exposed to a very high current. That should help reduce the risk of having the board getting burnt again.
The screen only vents out once there is excessive heat in the unit and the fans in it are not working, then the screen can vent out.
Carefully assess all the boards on the television for any bad capacitors, like the ones that are swollen, it is not necessary for them to be bursted or smelly before they are bad, you just have to check for the ones that are already swollen.
Hope this information was helpful in solving the problem.
Posted on Jun 28, 2011
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