Question about Philips 27PT543S 27" TV

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Tv will not power up

My tv will not power up now, it used to take several attemps to get the picture to come on, would have sound no picture. Now it will not power up at all

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Re: tv will not power up

Sounds like a fuse or fuseable resistor may be open due to a short in the high voltage circuits. I would first check the Horizontal output transistor Q7460 and if that was shorted, I would replace C2455 (47uf/50v) as well to prevent a reoccurance of the problem. Of course with the prices of 27" TV's falling, it may be un-economical to repair.

Posted on Feb 11, 2007

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Your problem could be any one of the boards in the set. When a flat screen attemps to turn on, but finds an internal problem, it defaults by clicking off to keep the remaining circuits and boards from buring up. You'le have to take the tv to a shop. Sorry that I can't be of more assistance.
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Try unpluging the power from the tv for a several seconds.

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Sounds like tyo me that the picture tube is getting soft on ya!!. Its a common factor that occours with all tvs but mostly with zenith. A service tech might be able for a small fee rejuvinate the picture tube but theres never a warrantee with this type repair. Its not something a user should attemp to do as theres hi voltage inside this set even on the tube socket after its ubplugged for awhile. Seek the advise of a repair pro to see how bad the tube is. Good Luck

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