So I turn TV on. TV has no backlight but has picture. I considered LEDs, either way some oddity and I pulled it down to the LEDs and all LEDs light up and aren't dead. So I have it down to LEDs and plugged in and can hit power button (no panel connected) and I get these voltages
connector CN201
pin 1 (18vsb1) = 18v
2 (18vsb1) = 18v
3 (18vsb2) = 18v
4 (18vsb2) = 18v
5 (GND)
6 (GND)
7 (GND)
8 (GND)
9 (ps on/off) = 3.3
10 (bl on/off) = 3.3
11 (NC)
12 (NC)
CN301
1 (vsync) = .017
2 (hsync) = 3.3
3 (mosi) 0
4 (sclk) .057
5 (miso).036
6 (cs) 3.3
7 (GND)
8 (fault) = .044 and fluctuating to .8and drops immediately. Every 1 sec
9 (5v sw) = 4.975
10 (GND)
CN601
1 (v out) = 36v
2 (vout) = 36v
3 (vout) = 36v
4 (nc)
5 (nc)
6 (nc)
7 (led 1) = 5v
8 (led 2) = 5v
9 (led 3) = 5v
10 (led 4) = 5v
11 (led 5) = 5v
12 (led 6) = 5v
13 (nc)
CN602
1 (v out) = 36v
2 (vout) = 36v
3 (vout) = 36v
4 (nc)
5 (led 7) = 5v
6 (led 8) = 5v
9 (led 9) = 5v
7 (led 10) = 5v
8 (led 11) = 5v
9 (led 12) = 5v
Is the fault fluctuating telling us something? I'm using ground as negative for LED voltages, maybe that's wrong. But backlights will NOT turn on.
I need help backlights need to turn on. Any experience with this?
connector CN201
pin 1 (18vsb1) = 18v
2 (18vsb1) = 18v
3 (18vsb2) = 18v
4 (18vsb2) = 18v
5 (GND)
6 (GND)
7 (GND)
8 (GND)
9 (ps on/off) = 3.3
10 (bl on/off) = 3.3
11 (NC)
12 (NC)
CN301
1 (vsync) = .017
2 (hsync) = 3.3
3 (mosi) 0
4 (sclk) .057
5 (miso).036
6 (cs) 3.3
7 (GND)
8 (fault) = .044 and fluctuating to .8and drops immediately. Every 1 sec
9 (5v sw) = 4.975
10 (GND)
CN601
1 (v out) = 36v
2 (vout) = 36v
3 (vout) = 36v
4 (nc)
5 (nc)
6 (nc)
7 (led 1) = 5v
8 (led 2) = 5v
9 (led 3) = 5v
10 (led 4) = 5v
11 (led 5) = 5v
12 (led 6) = 5v
13 (nc)
CN602
1 (v out) = 36v
2 (vout) = 36v
3 (vout) = 36v
4 (nc)
5 (led 7) = 5v
6 (led 8) = 5v
9 (led 9) = 5v
7 (led 10) = 5v
8 (led 11) = 5v
9 (led 12) = 5v
Is the fault fluctuating telling us something? I'm using ground as negative for LED voltages, maybe that's wrong. But backlights will NOT turn on.
I need help backlights need to turn on. Any experience with this?
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