Question about Sony BRAVIA XBR 52 in. LCD Flat-Panel HDTV
At a year and 2 months from new, my KDL52XBR4 developed problems. About 3 weeks ago on startup, there was a shrill whistle for about 2-5 minutes then gone - noise never came back. About 7 minute after this first morning startup and thereafter, a fuzzy black band instantly appears in middle of screen, 1 foot wide. Rest of screen gets darker. Perimeter starts to go black. A few days later, also started smearing, ghosting, not refreshing on right perimter, overlapping images. So it's gradually getting worse. After 5 minutes, TV snaps to perfect, no problems at all for the rest of the many hours the TV is on. Qualified technician looked at malfunction for 5 minutes, said LCD screen with attached `TCON(?)" needs to be replaced. Cost $2900, Sony will only help $900, so I'm out $2000, with only a 90 day warranty !! In my past experience (I'm retired mech./chem engineer), power supplies provide different voltage levels to radio/TV's. If voltage levels are off until defective power supply is replaced, warms up, or starts working right, won't that throw off flourescent back light starter and voltages running circuitry ? I've had only one diagnosis, and hate to spend $2000 on a 10 minute diagnosis. He didn't hook up any analysis machines, and was adamant about problem. What's a TCON ? Please advise. Thank you, Jeff
Hi, I have a similar issue which is progressively getting worse. My TV is on a sliding mount, and interestingly enough, sometimes I can "jilt" it by hitting it and it clears. This seems to me to be a connector problem, where heat (thermal expansions, electrical resistances) can introduce degrading signal. Now if I could find a manual on how to take this damn thing apart.......Certainly does't solve the warranty issue, but at least gives a reason for one to kick their TV.
Posted on Jun 18, 2010
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Posted on Jan 02, 2017
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