Question about Toshiba 53H71 53 in. Rear Projection Television

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TV rapid power cycles

I have a Toshiba 53H71 and it recently started powering on/off randomly. I described it as 'rapid', because it just clicks off then immediately back on... 'rapidly'. It is doing this every 3 or 5 or 10 minutes or so.

We recently got a Wii and it started this a day or so after we hooked it up. I thought maybe it was because of the Wii's wireless remote system. Or maybe too much amperage load on the one outlet. I disconnected the Wii and unplugged it and one more item from the power strip. Still power cycling.

I've googled everything I can think of and find no definitive answers. Anyone here have input or advice, or better yet, the solution?

I'd sincerely appreciate any help that can be offered.

Posted by b0xyg3n on

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William Rayburn

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  • 934 Answers

Could be power supply related or the hyper board, Toshiba p/n# 23148017... Cycling on/off is the TV's protection circuit going into shutdown to keep from causing real damage. Get it to a shop and have them estimate it.

Posted on Nov 05, 2007

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My Toshhiba 53H71 went black and the red power light keeps blinking. Is it worth repairing.


Hello,


You can repair it, it is repairable, the problem is power supply board is dead, u know basic electronics' and soldering? Most of the times, the power supply board just have dead leakages gases capacitors.These capacitors always bulges up on it top,or puff up on it top.Replaced these gases leakages capacitors will get your TV power stable,and work again.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.

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Service manual


free download pdf manual.
copy/paste this in address bar if link doesn't work
http://tv.manualsonline.com/manuals/mfg/toshiba/53h71_1.html

or
http://manualsonline.com
put in Toshiba 53H71 in search then click on get this manual.

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omg.. i have the exact same prob...
is it a conindenice that we are all having the SAME prob around the same time?

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This looks like a problem either with the powers supply to the video signal processor and with thr power supply to the horizontal section (lack of complete horizontal deflection. This was caused by the voltage and current spikes of the power coming back on rapidly. Now to fix this problem involves coming into contact with hazardous voltages, I would suggest that you not attempt this repair on your own if you do not have a background in electronics. Please take this set to a qualified electronics repair shop

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Your Television is going into protection shutdown. More than likely the problem will be sweep related IE Convergance is the most likely culprit your best bet is to have a technician look at it

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