Question about Sony FD Trinitron WEGA XBRKV-40XBR800 40" TV

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Sony tv cuttin off and comming on

Tv cutting off and comming on sometimes when comes on cuts off right away or sometimes comes on and last for about half an hour to two days it has no cold solder please help me as soon as possible

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2 possible reason one is dried up capacitor wek ic. raised up g2 screen drive then observe,when everything is comming off do the raster come off also. if yes,then two sides come in fail its either the horizontal circuit or ur ps go low.

Posted on May 08, 2007

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  • marcial  nasi
    marcial nasi May 08, 2007

    now if not,video proccessing circuit is the next target.but it is complex,if u can read schematic,goto crt module try to find !k pin ur multitester set to rx1 black lead to crt ground.while the tv in on trigger the the lead of 1k with ur positive probe while observing the raster comes out! if comes out proceed to video ic replacement

  • marcial  nasi
    marcial nasi May 08, 2007

    there are only 2 component which to temp change while it is in failure state ic and cpacitor,..i hope this help u...

  • marcial  nasi
    marcial nasi May 08, 2007

    another thing! it might be a crack board..
    observe more

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