A friend brought over his LG 55LD520C LCD tv.
Symptoms: Has red standby. Power button turns light from red to blue. No audio (from what we can tell) and no backlights.
No bulging caps.
P201 Connecter
Left Side
Marked @Standby @On
P Dim #2 0v 0v
12v 0v 11.6v
12v 0v 11.6v
12v 0v 11.6v
GND 0v 0v
GND 0v 0v
3.5v 3.5v 3.5v
3.5v 3.4v 3.5v
GND 0v 0v
GND 0v 0v
24v 0v 0v
PWR 0v 3.3v
Right Side
Marked @Standby @On
Err 0v 0.9v
P Dim#1 0v 1.7v
A Dim 0v 3.2
Inv_On 0v 0.0v
GND 0v 0v
GND 0v 0v
3.5v 3.5v 3.5v
3.5v 3.5v 3.5v
GND 0v 0v
GND 0v 0v
24v 0v 24.2v
24v 0v 24.2v
To me it looks like the main board since I am not getting the BL_ON Signal (Inv_Ctl) and the Err voltage.
I have attached a few pics. One of the pics is for the IC that controls the INV_On and it looks like some bad soldering. Y'alls thoughts?
Also, if it is the main board, I can't seem to find the same number. Mine is EBU61044602 and I can find only EBU61044603. Will that one work?
Symptoms: Has red standby. Power button turns light from red to blue. No audio (from what we can tell) and no backlights.
No bulging caps.
P201 Connecter
Left Side
Marked @Standby @On
P Dim #2 0v 0v
12v 0v 11.6v
12v 0v 11.6v
12v 0v 11.6v
GND 0v 0v
GND 0v 0v
3.5v 3.5v 3.5v
3.5v 3.4v 3.5v
GND 0v 0v
GND 0v 0v
24v 0v 0v
PWR 0v 3.3v
Right Side
Marked @Standby @On
Err 0v 0.9v
P Dim#1 0v 1.7v
A Dim 0v 3.2
Inv_On 0v 0.0v
GND 0v 0v
GND 0v 0v
3.5v 3.5v 3.5v
3.5v 3.5v 3.5v
GND 0v 0v
GND 0v 0v
24v 0v 24.2v
24v 0v 24.2v
To me it looks like the main board since I am not getting the BL_ON Signal (Inv_Ctl) and the Err voltage.
I have attached a few pics. One of the pics is for the IC that controls the INV_On and it looks like some bad soldering. Y'alls thoughts?
Also, if it is the main board, I can't seem to find the same number. Mine is EBU61044602 and I can find only EBU61044603. Will that one work?
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