Question about RCA HD52W56 52" Rear Projection HDTV

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POPPING NOISE Our TV is making a popping noise while its on thus causing the picture to flicker, we pulled off the back of the set and it appears to be the right of the three bulbs is shorting out. But its not the bulb it is the white base under the bulb where we can see a spark. any suggestions?

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This looks like a compromise of insulation. I had this problem between the HV lead and the flyback transformer casing on an old Sharp CRT TV. Unsure of what to do, but fully aware of insulating principles, I stuck a rubber bookmark cover in between the lead and the flyback. The set works perfectly to this day.

Posted on Nov 22, 2007

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Mine did the same thing on a cable line and then i put rca cable on it and it never did it again

Posted on Oct 06, 2007

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Samsung HLS5086WX/XAA made popping noise and shut off, then made whirring noise.

When my TV did this in the past it ended up being the color wheel. I had someone replace it and it worked fine. I asked it if had to be calibrated after it is installed and he said no. Also make sure the door switch is pushed down when you install the back bulb door. Sometimes this switch can go bad as well.

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number off back for part #-----------Let me know...T.

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A loud popping noise, like a sharp "snap!", is usually caused by high voltage arcing. Somewhere in the high voltage system an insulator may be cracked or loose, such as the plastic around the flyback transformer or one of the rubber cups on a picture tube. When the high voltage arcs, it momentarily drops and the picture could go out for a split second. High voltage is dangerous in projection sets so allow a qualified tech to service it for you.

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1 Answer

Snap crackle pop

Check the Flyback, had same problem, replaced it and the unit worked good.

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