I recognized this problem as a bad Tcon and specifically a classic AS15F chip failure. This would be my first attempt at this type of repair without a proper rework station.
Borrowing a heat gun, I replaced it with a RM5101 off another Tcon board. Checking the screen, it appeared fixed, so I put everything back together and further testing indicated it was not fixed since the video had image retension (like burn in) and was a bit dark.
I just bought Hakko 937D clone off ebay with super fine tips so figured I'd touch up the joints. There appeared to be a short on one side of the chip and I ended lifting pads and bending pins on that side working it too much. On the plus side, the other three sides look pretty good though a teeny bit out of alignment.
Soooo close. A 10yr old, off-brand 32" TV isn't worth that much so not that big of a loss but it would have been nice to fix it.
Borrowing a heat gun, I replaced it with a RM5101 off another Tcon board. Checking the screen, it appeared fixed, so I put everything back together and further testing indicated it was not fixed since the video had image retension (like burn in) and was a bit dark.
I just bought Hakko 937D clone off ebay with super fine tips so figured I'd touch up the joints. There appeared to be a short on one side of the chip and I ended lifting pads and bending pins on that side working it too much. On the plus side, the other three sides look pretty good though a teeny bit out of alignment.
Soooo close. A 10yr old, off-brand 32" TV isn't worth that much so not that big of a loss but it would have been nice to fix it.
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