New to this forum, but not to forums in general. I recently picked up a Sanyo DP42848 on the cheap side with a similar issue that I've read on here. I noticed many people had a similar recurring issue "Good sound/no picture". However I didn't quite see anyone that had this particular picture issue. The TV will turn on, but the image is highly distorted and very whitish, almost bordering a negative type picture and the TV has white lines equidistant to one another going across vertically.
We proceeded to pop the back panel off and take a closer look at the boards. We checked the power supply board/input board/t-con board/and inverter boards, but to no avail did not see any 'swelling' or dead caps.
Further reading on this website indicated possible bad t-con board, further caused by a single chip on the board going bad. We decided to take a commercial heatgun and apply even heat on the t-con board around that chip, and after 15-20 seconds, the picture was perfect again. We removed the heat and the tv remained in good image for about 5 or so minutes till it started to 'darken' a little, then return to the original issue. We attempted to replicate the correction again, but this time the image froze and the whole screen started to fade to black from different points to the point the entire screen was black (but you could still tell it was lit). Turning the TV off for a few seconds and turning it back on returned it to the original problem.
Here are a couple pictures below of the particular issue we're experiencing. I'm thinking of ordering a replacement T-Con board, as I believe it's possibly the culprit to this issue. Let me know what you guys think. THANKS.
We proceeded to pop the back panel off and take a closer look at the boards. We checked the power supply board/input board/t-con board/and inverter boards, but to no avail did not see any 'swelling' or dead caps.
Further reading on this website indicated possible bad t-con board, further caused by a single chip on the board going bad. We decided to take a commercial heatgun and apply even heat on the t-con board around that chip, and after 15-20 seconds, the picture was perfect again. We removed the heat and the tv remained in good image for about 5 or so minutes till it started to 'darken' a little, then return to the original issue. We attempted to replicate the correction again, but this time the image froze and the whole screen started to fade to black from different points to the point the entire screen was black (but you could still tell it was lit). Turning the TV off for a few seconds and turning it back on returned it to the original problem.
Here are a couple pictures below of the particular issue we're experiencing. I'm thinking of ordering a replacement T-Con board, as I believe it's possibly the culprit to this issue. Let me know what you guys think. THANKS.
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