Question about Philips 27PT5445 27" TV

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Turning off My TV will turn off in a few mins, everytime I don't know why?

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  • William Beer May 11, 2010

    As I said the (LO3) chassis goes into shut down after 5 minuts and I believe it is a regulator problem but I do not have a print so could you give me the voltage readings that are nomal. THANK YOU.BILL

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2 Answers

Wrong

Posted on Oct 14, 2008

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Something is overloading the power supply or you have a cold solder joint some where on the circut board.
If you are a tec. look for over heated marks on the board.
hope this helps
Guy9

Posted on Jun 19, 2008

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Posted on Jan 02, 2017

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I turn my sony trinitron off. when turn it back on it will not turn it will not come on for hours and sometimes a couple of a couple of days!


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1 Answer

The tv keeps shutting off just after minutes of turning it on. We can wait about 5-10 min before turning it on again but then it only stays on for a few minutes.


This sounds like a heat related problem, which could be a faulty chip or a cold (bad) solder joint on one of the PCBs (printed circuit boards). Due to the lethal voltages present inside a CRT type television, it is strongly advised to have this repaired by a qualified technician. however, if you or someone you know is technically inclined, you can try to fix this yourself. Cold solder joints can often be spotted by visible cracks in the solder joints. a through inspection of all the boards could easily identify the problem which can be resolved with a quick tap with a soldering iron and perhaps a little extra solder added to the joint. if that yields nothing, another method is heat/cold stressing the boards while the TV is running. With the TV on, spray small areas of the PCBs with cold spray (or a can of compressed air duster turned upside down) until the tv shuts off. then heat the last sprayed part with a hot air gun (or a hair dryer) until you can get the problem to repeat regularly. inspect the area causing the problem and you will probably find the culprit.

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No, if the picture of your tv screen is clear when when you watching. the troble of your tv is looseboard, and you replace your CRT socket too.

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Most common reason for this problem is dry joints, ie cold/bad solder joints.

Capital98

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