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Toshiba TV 32ZT29B. Picture intermittent failure. After working for 5 minutes from cold the picture fails for 1 to 2 secs every few minutes always returning to good quaulity picture. Problem repeats continually.

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Tp61g60

Posted on Sep 09, 2008

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Tv pops on and off suddenly after viewing for about 10 to 15 mins. this problem becomes progressively worst after prolonged viewing. as of today there is absolutely no picture and or sound.


Your symptoms exactly match this scenario: a component involved in picture & sound was failing intermittently, then progressed to a hard failure.

My suspect: a power capacitor in the power supply. They sometimes fail this way - when the dielectric breaks down completely, then the power supply fails, causing no pic/sound.

Fix: replace power supply (or the specific capacitor, if you can determine which one died).

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This sounds like a power board problem. It is likely that capacitors on the board are failing so they can only store enough charge to properly supply DC current to the video board for a brief time. A shop will most likely suggest that you replace the power supply board entirely. If it were my TV I would remove the board and replace the bad capacitors for a few dollars myself. Depending on your experience with electronics and soldering you may want to do the same. Otherwise having a shop replace the board makes the most sense - the labor charges to repair the old one would not be worth it.









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We own a Toshiba Regza 42" direct view LCD TV. We have owned this since last November (bought as a Christmas gift). This TV was working great until last night (7/7). Powered it on and for a split...


Unfortunately there might no be a fix for this type of failure unless the LCD is open and perform a few measurements in the circuitry. Since the TV is less then a year old, I would suggest to contact the vendor or manufacturer to have it repair under warranty, most electronics devices carry one year warranty.
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1 Answer

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It sounds like cold solder joints on the vertical IC chip. Not a major deal. The entire board should be looked over for other joints becoming cold.

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I have the same problem. The only way to get the TV to come on is to unplug it, but once you get it back on it turns itself off again in a few minutes.

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you tv problem intermittent the problem is in the color circuit, vertical circuit.have a tech check your tv for repairs.good luck.

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Possible bad solder connections in convergence circuit or vertical deflection circuit. This happens in alot of equipment. After warm up, expansion of joint pulls connections loose. Recommend not running like this, could cause component failure.

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