Question about Toshiba 42H81 42" Rear Projection Television

1 Answer

Toshiba 42h81 rptv

Set turns "on", meaning power indicator light comes on, but no pic. any Ideas?

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  • natbuddy21 Dec 12, 2007

    red light was flashing. so i left it off. the next time i turned it on it made a pop noise and now there is audio but no video.?

  • dragonashh44 Feb 23, 2009

    Can u do that for a toshiba 40h82 I have the board out just need to know the resistor values and if I need to replace them nothing looks burnt and cant tell the values to check them with a voltmeter. Thanks

  • natbuddy21 May 11, 2010

    yah you will really have to dumb it down for me, if you can email me anything like diagrams or pictures that would be outstanding. im not good with the terminology. but ihave an idea either way i couldnt find the fuses or th grey jumper wires...please send me some stuff on my email.

    Natbuddy21@Yahoo.com

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  • 1,694 Answers

Pull chassis--check all fuses,esp, F850 & F851.They protect
the B+ supplied to convergence circuit.They are found in the power
supply,on edge of the main board.On the signal board,locate the
large IC's mounted to heatsinks.IC part #  STK392-110.Between the
edge of the signal board and the IC's---locate two grey jumper wires
and some hard wire jumpers = solder them all,if you don't,the fuse may blow again.Next,replace IC's with Hitachi up-grade part
# STK394-160E....Reassemble...power on.....touch magic focus
and you are done....T.     ?????s-----Let me know...

Posted on Oct 28, 2007

  • Vista Electronics Dec 18, 2007

    Solder jumper wires 008,010,017,048,600........

    IC part # CZ 01341 Hitachi brand.............T.

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STK392-110 's = replace with Toshiba or Sanyo quality only..
What was the location & value of the resistor ?
An IC, if shorted internally,can prevent the tv from powering up..
Re-check soldered in 5 amp micro fuses F850,851,852,etc
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1) Pull chassis
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Please read my previous posts concerning convergence repairs.
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