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Ilo dtv2794b no power fuse not blown power cord ok

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  • Anonymous Nov 26, 2008

    tv makes strange sound and wont turn on

  • Anonymous Dec 28, 2008

    i have the the buzzing squeal too, even when the tv is off, but it gets louder when its on, very annoying on the dtv2794b

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If you hear a sqealing or buzzing sound when you plug in the TV, the most likely cause is a shortedHorizontal Output Transistor (Q405) , due to a dry10uf/25v electolytiic capacitor on secondary side of Horizontal Output Transformer. If this is the cause, there will be tell-tale scorch marks in the vicinity of the capacitor. If you do not hear any noise, then the likely result is a bad Shottkey diode, of which there are quite a few possibilities In any event, DO NOT ATTEMPT TO REPAIR ANY TELEVISION YOURSELF FOR DANGER OF ELECTRICAL SHOCK! FIGURE THAT ON AVERAGE, FOR EVERY INCH DIAGONAL OF TV, YOU WILL HAVE ABOUT 1,000 VOLTS TO CONTEND WITH. THAT MEANS THAT A 27" TV SET WILL HAVE ABOUT 27,000 VOLTS!

Posted on Sep 18, 2008

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Bad power supply

Posted on Aug 18, 2008

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