Hi Everyone,
Starting a new thread to troubleshoot on a 50" plasma which is having no picture but sound. I tried to generate test patterns by shortening ext_auto on the control card but no video at all, which suggests that the mainboard is good. I checked the Vs and Va which appears to be good. When I switch the TV on in dark I see no light at all, does that mean the Z-main is faulty. Is there any way to confirm if the fault is in Z-Main/Y-main or power board. I cannot isolate bypass Y-main here as Z-main is connected via Y-main.
The owner of the TV was telling this TV had starting problems earlier but slowly that aggravated and the TV is no more turning on. I suspected some fuses before buying it, but my bad luck.... Its's actually turning on pretty fine using remote. I can change the channels, etc but cannot see the picture. I have a multimeter, soldering iron, etc to troubleshoot further. Please suggest how to go ahead with this. Thanks. Rahul.
Starting a new thread to troubleshoot on a 50" plasma which is having no picture but sound. I tried to generate test patterns by shortening ext_auto on the control card but no video at all, which suggests that the mainboard is good. I checked the Vs and Va which appears to be good. When I switch the TV on in dark I see no light at all, does that mean the Z-main is faulty. Is there any way to confirm if the fault is in Z-Main/Y-main or power board. I cannot isolate bypass Y-main here as Z-main is connected via Y-main.
The owner of the TV was telling this TV had starting problems earlier but slowly that aggravated and the TV is no more turning on. I suspected some fuses before buying it, but my bad luck.... Its's actually turning on pretty fine using remote. I can change the channels, etc but cannot see the picture. I have a multimeter, soldering iron, etc to troubleshoot further. Please suggest how to go ahead with this. Thanks. Rahul.
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