Question about Mitsubishi VS-6041 60" Rear Projection Television

1 Answer

Has been working fine. Would not turn back on, only relay click heard.

Has not shown any previous signs of problems. Just would not turn back on one day. You can hear the power relay click, and can see internally that nothing is powering up. I am more a computer tech, and I am by no means a television tech. It seems to me to be a problem with the power board.

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  • rtech Sep 30, 2007 doesn't have a manual for this model, do you know of any other tv manual sites I can check? The power button doesn't light at all, but you can hear the relay click when you push it. The Mitsubishi Electronics web site doesn't provide any support for any tv before 2002. My VS-6041 is a 1996 model. Even so, I could not find a troubleshooting chart for any projection screen on their site, but I am still looking.

  • rtech Oct 02, 2007

    I have tried unpluging and pluging the unt back up after a while several times with no luck. Same symptoms. I have opened up the unit and cleaned up the board with air. I have the unit partially out but still connected. I will start labeling cables shortly so I can get the board out for testing. I just aquired a service manual from and will comment further after I have had a chance to review. Any advise on how to test the flyback transformer and the ic's will be greatly appreciated.

  • rtech Oct 07, 2007

    Sorry, my 3 yr.old has kept me busy. I have checked the fuses with a continuity tester and they are all fine. Power is getting from the first board and seems to be correct by the schematics. I have steady power at the HB lead, and I am getting power on the HS lead from the first board after pressing the tv's power button (so the power relay must be ok). I haven't gotten any further than that at present. Schematics from the service manual are lacking in architecture from the real deal, so tracing is going a little slow for me right now. Any advice will be helpful.

  • rtech Oct 07, 2007

    I am not getting power to the flyback transformer with the unit turned on. Pins 1,2,& 3 are showing 1.5 v, 50 or less mv on other pins stepping down to zip. I will have to trace back from here.

  • rtech Oct 08, 2007

    Sorry to mislead; I checked the flyback transformer on some pins I missed, pins 11 and 14 only showed micros, but pin 12 has 144 v. and pin 13 has 170 v. I did check the H-out transister, it seems to test correctly but I am not detecting the 123v that should be here when the tv unit is powered. (This is also connecting to the #2 pin on the flyback trans.) Where should the power be coming from for this circuit?

  • rtech Oct 08, 2007

    For clarity, the H-out does short between pins B and E.

  • rtech Oct 10, 2007

    While tracing for picos, I found a slight discoloration on the positive side of the D9A10, RU 4YX Power Diode. When inspecting it, the solder flaked off the pin with a stab of a probe. The diode still tested good, and after resoldering, the television powered up.
    Do you think the solder gave to the heat of the Diode, or is there something else I might want to test for?

  • rtech Oct 10, 2007

    Thank you for all your help, bigg t.

  • rtech Oct 10, 2007

    Thank you again for all your help. You've been great.



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  • 640 Answers

There are fuses on the psb (power supply board)check them with a meter for continuity.make sure your getting 110v into the board.grab a schematic from voltage readings to and from all the boards.if the psb is bad it'll cost around 500 bucks for a tech to come out and replace it.if you can narrow it down to a specific board you can replace it yourself.turn the set on and look at the power button color on the tv is it red or green?goto mitsubishis web site and get the troubleshooting flow chart,it will give you symptons and codes to find a problem.

Posted on Sep 30, 2007

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  • anthony james
    anthony james Oct 01, 2007

    if you havent checked the fuses check them.also unplug the tv for about half hour and plug back in and turn on.sometimes they will reset themselves.the problem your desribing sounds like the flyback transformer has went or ic's are burnt.can you open up the tv and visually inspect it?i will try to find a schematic for you.

  • anthony james
    anthony james Oct 02, 2007

    ok let me know

  • anthony james
    anthony james Oct 07, 2007

    from the schematic read the voltage going into the flyback transformer and coming out.

  • anthony james
    anthony james Oct 08, 2007

    check the horizontal output transistor for an open or short condition.

  • anthony james
    anthony james Oct 09, 2007

    trace before the hot and see if pico fuses (they look like small resistors and would be discolered or burnt) are in the circuit.check for open condition,if you see this you would then have to remove and replace the hot and shack would most likely have these.let me know

  • anthony james
    anthony james Oct 10, 2007

    it was probably due to heat.if there was excessive current draw you would have more than 1 failed component.



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