I obtained this TV with the info that the owner's little daughter has been supposedly painting the TV with milk It's an LG 32LW570S.
I have been reported there was something with the ribbon cables but I have not found any residue or problem at any conenctor or cable, they are all clean, maybe cleaned by the owner, not sure. I can clean them with alcohol but don't think this is the right path. Anyway, the TV shows this
instead of
It seems to me as usuall voltage-buffer problem? This is the Tcon (not my image)
There seem to be two chips, both SMD so the milk could have been sucked between the solder balls as the tiny space there behaves like capilary. They are TPS65194 and BUF08630.
voltage readings at pins:
GMA1: 16,67
GMA3: 14,72
GMA4: 13,90
GMA5: 12,74
GMA7: 10,68
GMA9: 8,58
GMA10: 0,50
GMA12: 6,13
GMA14: 4,03
GMA15: 2,92
GMA16: 2,17
GMA18: 0,34
H_CONV: 0,01
POL: 1,66
I would say channel 10 is the problematic one?
I have been reported there was something with the ribbon cables but I have not found any residue or problem at any conenctor or cable, they are all clean, maybe cleaned by the owner, not sure. I can clean them with alcohol but don't think this is the right path. Anyway, the TV shows this
instead of
It seems to me as usuall voltage-buffer problem? This is the Tcon (not my image)
There seem to be two chips, both SMD so the milk could have been sucked between the solder balls as the tiny space there behaves like capilary. They are TPS65194 and BUF08630.
voltage readings at pins:
GMA1: 16,67
GMA3: 14,72
GMA4: 13,90
GMA5: 12,74
GMA7: 10,68
GMA9: 8,58
GMA10: 0,50
GMA12: 6,13
GMA14: 4,03
GMA15: 2,92
GMA16: 2,17
GMA18: 0,34
H_CONV: 0,01
POL: 1,66
I would say channel 10 is the problematic one?
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