Emac display lines and restart

My display has short lines that are negative and positive. and jump around like electrical interference(maybe not that intense ). When I tried a restart, to see if it would help with the quality of display, my start up disk failed and got me to the blue screen starting to load OS 10, and then only blue screen. I zapped the PRAM. Then I could use my restore and install disk. I reinstalled both Tiger and Panther. Everything works until trying to restart. I still have distortion in the display. My serial number is G84313.... is this significant? Any ideas?

Hi. I don't think that it is possible to fix the lines on your screen. I'm thinking that maybe you had placed a magnet near the CRT display which causes the colors to get distorted and also the picture loses clarity and detail. When this happened to me I restarted the system right after it happened and it was normal.

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