Unfortunately one of the boards may have had a failure - this seems to be a common failure on another brand of 42” Plasma TVs .. the LG brand
- not sure if that means the buffer board or main board
Check high voltage circuit. This is near where the 120 volt cord is plugged in and a high voltage transformer, where there should be capacitor (or two). Check the voltage - should be 390 to 400 volts. If not less than 390, near to replace the capacitor.
SOURCE: 42 inch LG Plasma TV - Lost picture
try connecting tv to cable direct also try unplugging both converter and tv for wile like 5 mins plug both back in see if tv and converter sync
SOURCE: 42 inch LG Plasma TV - Lost picture
This is almost certainly the device that sends electricity to the the plasma in the panel after failing. Bring to your local repair shop and expect to pay 300-400 parts and 100-200 labour.
Cheers,
Stephen
SOURCE: my viore 42 in plasma is not projecting image. I
The video IC module seems to be giving problems. Open the back cover and take a peep inside. Look for the module just short of the screen. replace it if need be.
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