Question about RCA D52W20 52" Rear Projection HDTV-Ready Television
I had the same problem with the three blinking lights. I removed the AV cover like in the previous post. I blew all the dust out and gently wiggled all the wires I could get my hands on and viola! It's working again. It's been fine for a week now and it was actually to the point where it wouldn't even power up before I cleaned it out.
Posted on Jun 06, 2007
After some poking around on the net I happened across a post with two techs talking about troubleshooting this problem. One had pinpointed an area to test (a little beyond the mere mortal thing to do) In any case I found the area and connector they were discussing. To fix my TV that had this same 3-cycle problem, all I did was pull the AV cover panel off and on the leftmost side you'll see a beige board on the left, green on the right. I blew compressed air in the left side between the heatsinks (tall aluminum structures). I then pulled, cleaned, and replaced the closest white ribbon connector between the boards. Afterwards I dry-wiped the bottom of the beige board in about a 2-inch area surrounding the heatsinks/ribbon connector. I plugged in the TV and it's been working for days now. The post had discussed a voltage drop due to resistance in that area so I speculated either a dirty contact or something had gotten on the boards in such a manner as to increase the resistance. My guess paid off. I realize it's probably the lowest-tech fix ever but for now saved me a ton on a repair.
Posted on Apr 14, 2007
Usually a shorted audio IC will cause this symptom. If not that than possibly a shorted diode or component in the deflection circuits. The set should be worth repair if the picture quality was very good before going out.
Posted on Jan 28, 2007
Tips for a great answer:
Diagnosis: If none of the above test resolve the issue, then the failure lies in one of the following:
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