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Tv repair the power will not stay on.

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Re: tv repair

You don't give much in the way of details... How long does it stay on? Long enough to give a picture and audio?? Or maybe 10- 30 minutes?

If it only comes on momentarily, not even long enough to give video, then it could be going into Hi-voltage shutdown, probably indicating an overvoltage condition. This could be caused by a voltage regulator failure. Troubleshooting this is best done by a qualified technician.

If it stays on for several minutes, maybe even 30 minutes or so, then goes off, bad solder connections might be the culprit. A modest whack or bump on the side or back of set might confirm this. Whack it... if set dies, you likely have a bad connection problem. If you have good eyes, a solder iron and solder, and know how to solder, then you might be able to find the bad connection(s) on the chassis. Common locations for this are in the horizontal deflection, power supply or vertical deflection portions of the circuit.

Posted on Jan 08, 2008

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My rca tv will come on but won't stay

sounds like a power supply problem/cooling, cpu maybe over heating and causing it to shut down as a safety feature. att his point how ever its very unlike they have parts to repair it.

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There is nothing can be done outside the tv. The CRT (cathodic ray tube) is getting to its end (maybe). A couple of tests are posible in the workshop to get the final answer.

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I JUST (2 minutes ago!) had the repair man leave for the EXACT same problem on the same model TV!! All he had to do was take the front panel off the TV (in the front) and clean the bulb and fan. He said that the dust gets trapped in there and makes the bulb power off! $100 service call to clean the bulb!! Now it is working GREAT and has not powered off since! Hope this helps!!

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It seems that Your TV set may have a problem with its power supply circuit, the problem is intermitent bring it to the repair shop.

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This is an indication in most cases that the flyback and horizontal output transistor are failed. Along with that the power supply may need service.

Take the TV to a service center to have it repaired by an experienced TV service tech.

I can tell you that this type of repair will not be low in cost.

Jerry G.

Jan 01, 2008 | Sony FD Trinitron KV-28FQ75 28" TV

1 Answer

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Hello, it is hard to say if this would be a costly repair without making an apropriate diagnostic of a specialized technician. Best regards, Arpi

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You are approaching a large problem, please calla good tv technician so to repair your power suply and TV tube supply board. Patrick

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1 Answer

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Greetings from Belize take your set to a tech for repairs if you have not done so.your are having problems in your power supply section or your horizontal circuit.good luck.

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