Watching television. heard pop and screen went blank. Sound still works.Found blown fuse on circuit board on back that has 8 ribbons connected and going to screen. replaced fuse tv clicks like its coming on then goes off. disconnected board from tv turned on and seems like power stays on. What is this board and where do u get one. Justin 918-850-9406 or firstname.lastname@example.org
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It can't be fix by replacing the fuse alone because the IC's and other parts are already faulty. You need to replaced the entire Y-sustain board. Try this LINK or obtain it from your local LG Service Centers.
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This sounds alot like the same issue I had with my HP 42 inch plasma. Many plasmas had an issue with failures on the YSUS and ZSUS printed curcuit boards.
If you are willing and able to do some dissasemply yourself, open the TV and see if it uses these cards...if so then look at the solutions listed for the HP PL4260N TV issue.
I found the fuse blown on my YSUS board, I removed it and had it repaired by coppel TV..if you find a board that is bad, chances are someone on EBAY repairs them or swaps them out...mine cost $75 to repair and I was back in business...TV works fine again now that I had the board repaired.
Your tv contains protection circuitry that would shut down the tv if the ymain was out. If the ymain had blown, you'd have no sound and just a flashing standby light. My gut tells me you need to replace the Power Supply Board (PSB). I've seen this before and after spending too much money trying to diagnose a ymain failure, I was surprised to learn that when you have sound but no picture, the psb is a gonner. Try ebay, shopjimmy.com or discount-merchant.com for a replacement.
I assume this is a plasma TV? You will have a fuse blown on either the Y or Z sutain board, there is also a possibility one of the driver IC's has blown on the buffer board, this will shut down the screen & leave the audio working normally. You can check these boards which sit on the left & right hand sides of the screen.
If there was a loud pop then it would appaer a fuse has probably blown either on power supply especially if there is no indicator light showing. If you are getting the red stand by light then possibly a different fuse on the sustain board has blown. You would need to remove the rear cover & check any of the fuses. Most likely if they have blown something more serious has occured to cause & replacing the fuse will result in it blowing straight away.
Have you tried checking the fuses this is a solution i posted a little while ago!!! I was watching tv there was a popping noise and screen went blank. My husbands very practical and we took the back off the tv ,we tested the fuses with a fuse tester and one had blown we took the fuse too Maplin our nearest electrical wholesaler who found us new fuses £1.29 for a pack of 10. We replaced the blown fuse now everything works as it should. Hope this helps we saved about £275 by doing it ourselves but do make sure you feel competent enough to have a go its not that hard but do make sure you unplugg the tv from the electric before you attempt taking off the back and checking the fuses and be careful as tvs can store a electric ok