SOURCE: LG 42pc3dv-ud
Yes you need to replace the board LG 6871QYH048B. The board has a short. Check the fuses and one of them should have no continuity
because it is open.
Replace that board and problem solved
SOURCE: i have sound but no pic
replace display board.
if unit is under warenty
LG is very good at sending out replacment boards.
SOURCE: i have a lg 42pc3dv plasma tv. it made a loud pop
Looking at it from the back, the board on the left is the ysus. You should see a big red cable coming from the power supply board in the middle of the set going to the ysus. Near the red cable plug on the ysus should be a fuse. Most likely the fuse has blown. If it is you need a ysus PCB. Check out encompassparts.com. If you get a new board be sure to set all the controls on the new board to match the old board. If you don't you will have little sparkles all over the screen when it comes back on. I hope this helps. You may want to check all fuses on the power supply and the zsus which is on the right side of the set. I have seen both the ysus and zsus be bad together. Good luck and thanks.
SOURCE: lg plasma t.v. has sound, but no picture
That usually indicates that the power section driver board (one of them) has failed on you.There are three boards each of which can fail and cause this. Usually it is the Y or Z board.
Bad news is to know which one you need to be able to test inside the tv. Good news is the boards are fairly cheap around $35. So you probably will have to take it to a repair shop to get it fixed. Unless they really try to do a number on you as far as prices it is worth fixing. However be a bit cautious here and get and estimate and find the price of a new tv. If the markup on the parts and the labor gets close to the new tv cost then you will need to decide if it is worth fxing or replacing. Ie used tv or new tv with warrenty.
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