Question about RCA Televison & Video
Your screen needs to be degaussed. It's normal for the colors to look a little strange after you move a set around because of magnetic fields, and degaussing tneutralizes the field on the tube face which causes the discoloration. There is a circuit in color TV sets to degauss them automatically when you first turn them on, but they can't always cope. Or a part called a thermistor may have failed in your set (it's common) and the degaussing circuit may not be working.
The colors may gradually come back to normal if the TV degaussing circuit is working. You can purchase a handheld degaussing coil and clear this up, or you can call a TV technician to come out and do it. I have no idea what it costs for service calls today - I've been out of that business a good while now. I just made a quick check on eBay, and several degaussing coils are listed with average price around $50. Check what a tech would charge to come out and let price be your guide.
And the x-ray shutdown test you mentioned has nothing to do with the colors. That's to make sure the set will shut off properly if the picture tube voltage rises too high, possibly causing a safety hazard from x-ray emission. Don't worry about that; only after replacing some parts in the high-voltage section do you need to check the operation.
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Posted on Oct 06, 2010
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Posted on Jan 02, 2017
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