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My Zenith 520 receiver is acting strangely. When I change channels I get a lot of white horizontal lines popping up two or three times. It happens on all channels, Sta,. Cable and OTA. It also happens when I close the menu box. Maybe the receiver is getting ready to die. I have another Zenith 520 that I am not using but the modem is stuck in the open position and I don't know how to repair it. Any ideas on the first reciever? Thanks.


Jim
 
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