i have a color Zenith advanced system 3 and after watching for about 1 hour...it goes black and white or totally messes up and even mutes itself. i just bought it used and love it...but, i do like to watch tv for more that one hour. any ideas...why it goes black and white or goes bizerk after an hour or so of watching?
-   i have the same model except its a seq surround edition, and it used to go black and white when i turned it on and stayed that way for a little while, and after a short period of time of usage it would go back to color, but for some reason, after prolonged periods of not using it, now it appears to be permanently in black and white mode.
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