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I have a Philips TV Mach3Line 29 inch 29SX8771/75R that wont power up. No Picture, No sound, no power LED, just a high pitched chirp sound every second (not coming from speakers). Is it likely to be worth fixing?

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  • em8it Jul 20, 2008

    Sorry, I posted this in the wrong section, its not a rear projection TV.

  • em8it Jul 25, 2008

    Thanks for the reply. Although very dusty, and after cleaning the dust away, I had a very long and close look at all components and solder joints and couldn't see anything that looked burnt out or slightly discolored. I've no idea how to actually fault find it, but was prepared to try soldering in an obviously burnt out component, so I'll take it to a Tech. Thanks Again.

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The chirping sound indicates the power supply is starting finding a problem and shutting down hence the cycling trip can be caused by any number of faults but I would first try the Line output transistor for a short collector to chassis if this is ok then Philips TV are prone to the small blue high voltage capacitors (2/3 Kv.102k/222k) becoming short usually indicated by being burnt or very discoloured.. If you are not technically minded its best left to a Tech.. Hope this helps.SUPER8

Posted on Jul 22, 2008

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