What did you find out about your JVC GD-V4210PZW-G not working? I have the same problem with mine. It worked great for 6 years then cuput. The power comes on and the back light for the plasma is illuminated. Sound works great too. But no picture.... I worried the plasma screen itself is fried. i heard if dust gets inside the plasma it can ruin it. I always tried to keep it clean of dust but i think some dusts got back there and ruins it. Now I sad. Kim

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