Hello
I am repairing the Toshiba 39L4333 dg, it was in worse condition than I expected.
Currently, it turns on and off normally, the backlight normally follows the voltage on the CN3 VF1_VF2 81v, F3_VF4 49v, FB1_FB2 43v FB3_FB4 6.1v connector, the main connector is also correct. The matrix changes only the vertical stripes depending on the signal, after connecting the sound is only on HDMI 2.
I heated the BGA on the main, I check the circuits for which I find schematics, and now I found that the lack of 3.3v on t_con, the second 12v is correct, it looks like the logic has no 3.3v voltage.
BN91-102 power supply
main 32L4300 rev 1.02A BTC-202A
T_con integrated with AOU matrix T390HVN01 .0
He is looking for a scheme for the whole.
I am repairing the Toshiba 39L4333 dg, it was in worse condition than I expected.
Currently, it turns on and off normally, the backlight normally follows the voltage on the CN3 VF1_VF2 81v, F3_VF4 49v, FB1_FB2 43v FB3_FB4 6.1v connector, the main connector is also correct. The matrix changes only the vertical stripes depending on the signal, after connecting the sound is only on HDMI 2.
I heated the BGA on the main, I check the circuits for which I find schematics, and now I found that the lack of 3.3v on t_con, the second 12v is correct, it looks like the logic has no 3.3v voltage.
BN91-102 power supply

main 32L4300 rev 1.02A BTC-202A
T_con integrated with AOU matrix T390HVN01 .0
He is looking for a scheme for the whole.