Hello,
I have a LG 60 pv450 that has sound but no picture. I looked through all the threads and couldn't find one exactly for me.
Here is what I have done so far:
when the TV is powered up I get the 210 VS and 54 VA on the power supply and at the connector of the Zsus and Ysus boards. All fuses on the Power supply, Zsus and Ysus boards are good. The coils on the Zsus and Ysus boards look good (no cold solder joints).
I tried to get the test pattern and still no picture.
I checked the VSC and -VY and had no to very little voltage (0-3Vdc). I tried it with the buffer boards out with the same result. Also tried the Zsus connector disconnected same result.
How do you check the buffers for shorts with a meter?
I checked the V2B on the Zsus board and got 5 VDC. Same result with the Ysus board disconnected.
I have changed the main board and the Ysus board already.
Any help would be appreciated.
I have a LG 60 pv450 that has sound but no picture. I looked through all the threads and couldn't find one exactly for me.
Here is what I have done so far:
when the TV is powered up I get the 210 VS and 54 VA on the power supply and at the connector of the Zsus and Ysus boards. All fuses on the Power supply, Zsus and Ysus boards are good. The coils on the Zsus and Ysus boards look good (no cold solder joints).
I tried to get the test pattern and still no picture.
I checked the VSC and -VY and had no to very little voltage (0-3Vdc). I tried it with the buffer boards out with the same result. Also tried the Zsus connector disconnected same result.
How do you check the buffers for shorts with a meter?
I checked the V2B on the Zsus board and got 5 VDC. Same result with the Ysus board disconnected.
I have changed the main board and the Ysus board already.
Any help would be appreciated.
Comment