So in an attempt to avoid further confusion this is an extension of this thread: https://www.badcaps.net/forum/showthread.php?t=73120 I made such a mess out of this one that I felt to avoid confusion and back-tracking through 8 pages of thread I thought I should just start over with what I have right now.
BACKGROUND:
This TV is the victim of a confirmed over-voltage event. I bought this Sony and a TCL TV from the same place, both appearing dead. I replaced the power supply in the TCL which fixed that TV.
To this point, fusible resistor R6201 was replaced for being open and IC6201 was replaced due to a 170ohm short across the S and D pins. After their replacement, stand-by volts would increase from about 3.2V to 4.45V when CN6101 (to the main board) was detached. From this it was suggested IC6251 is replaced, which I just did 30min ago.
There is still no stand-by light, however stand-by voltage of 3.25 to 3.3v is now at CN6101.
VOLTAGES CN6101:
PIN no…………………PIN ID…………………….Volts……………………..Volts CN6101 detached
1……………………..POWER_ON…………………0v………………………………………..0v
2-5………………………NC
6………………………..BL_ERR……………………..0v………………………………………..0v
7…………………….AC_OFF_DET………………0.46v…………………………………..3.21v
8………………………T-CON_ON………………….0v…………………………………………0v
9……………………………GND
10………………………STBY_3.3………………..3.26v ……………………………………3.3v
11……………………..AU_GND
12……………………..AU_12V……………………..0…………………………………………0
13……………………..AU_GND
14……………………..AU_12V……………………..0…………………………………………0
15, 17, 19, 21, 23, 25, 27……GND
16……………………..REG_12V……………………0…………………………………………0
18……………………..REG_12V……………………0…………………………………………0
20………………….BOR_ASU_12V………………0…………………………………………0
22………………….BOR_ASU_12V………………0…………………………………………0
24………………….T-CON_VCC12V…………….0…………………………………….……0
26………………….T-CON_VCC12V…………….0…………………………………….……0
28………………….T-CON_VCC12V…………….0…………………………………….……0
So there still looks to be a problem on both POWER_ON and AC_OFF_DET lines.
BACKGROUND:
This TV is the victim of a confirmed over-voltage event. I bought this Sony and a TCL TV from the same place, both appearing dead. I replaced the power supply in the TCL which fixed that TV.
To this point, fusible resistor R6201 was replaced for being open and IC6201 was replaced due to a 170ohm short across the S and D pins. After their replacement, stand-by volts would increase from about 3.2V to 4.45V when CN6101 (to the main board) was detached. From this it was suggested IC6251 is replaced, which I just did 30min ago.
There is still no stand-by light, however stand-by voltage of 3.25 to 3.3v is now at CN6101.
VOLTAGES CN6101:
PIN no…………………PIN ID…………………….Volts……………………..Volts CN6101 detached
1……………………..POWER_ON…………………0v………………………………………..0v
2-5………………………NC
6………………………..BL_ERR……………………..0v………………………………………..0v
7…………………….AC_OFF_DET………………0.46v…………………………………..3.21v
8………………………T-CON_ON………………….0v…………………………………………0v
9……………………………GND
10………………………STBY_3.3………………..3.26v ……………………………………3.3v
11……………………..AU_GND
12……………………..AU_12V……………………..0…………………………………………0
13……………………..AU_GND
14……………………..AU_12V……………………..0…………………………………………0
15, 17, 19, 21, 23, 25, 27……GND
16……………………..REG_12V……………………0…………………………………………0
18……………………..REG_12V……………………0…………………………………………0
20………………….BOR_ASU_12V………………0…………………………………………0
22………………….BOR_ASU_12V………………0…………………………………………0
24………………….T-CON_VCC12V…………….0…………………………………….……0
26………………….T-CON_VCC12V…………….0…………………………………….……0
28………………….T-CON_VCC12V…………….0…………………………………….……0
So there still looks to be a problem on both POWER_ON and AC_OFF_DET lines.
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