I just got some problems with my 42LG60 and I cant seem to find the problem
When plugged in (after not using it some time) it turns on. Backlight turns on and image shows up. When turning it off and on. Nothing happens. It looks like some kind of reboot loop (red ring/white ring)
so I took the service manual.
Powerboard check ( EAY41971801 )
Step 1. Check 5v line. Check okay
Step 2. I connected a 10k resistor to 5v and power and checked the 5v, 12v and 16.5 v
the 5v line is okay; so is the 12v line
But the 16,5v line is low, about 14.68V
Step 2. Connecting a jumper wire for the backlight.
According to the servicemanual the backlight should turn on/off 4 times and than quit. Mines keep on blinking.
16v keeps jumping from 10-14 volts and the 12v lines jumps from 11-12
When disconnecting the jumper wire. The voltages keep jumping.
I already replaced the caps on de powerboard but that doesn't seem to help
When plugged in (after not using it some time) it turns on. Backlight turns on and image shows up. When turning it off and on. Nothing happens. It looks like some kind of reboot loop (red ring/white ring)
so I took the service manual.
Powerboard check ( EAY41971801 )
Step 1. Check 5v line. Check okay
Step 2. I connected a 10k resistor to 5v and power and checked the 5v, 12v and 16.5 v
the 5v line is okay; so is the 12v line
But the 16,5v line is low, about 14.68V
Step 2. Connecting a jumper wire for the backlight.
According to the servicemanual the backlight should turn on/off 4 times and than quit. Mines keep on blinking.
16v keeps jumping from 10-14 volts and the 12v lines jumps from 11-12
When disconnecting the jumper wire. The voltages keep jumping.
I already replaced the caps on de powerboard but that doesn't seem to help
Attached Files