Question about Mitsubishi VS-5043 50" Rear Projection Television

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Mitsubishi VS-5071 rear projection turns on, has audio but no video

I have aa Mitsubishi VS-5071 50 inch rear projection TV and the video just stopped working. None of the projectors light up but sound is great. I examined the PCB's and found no burnt marks and there is no smell of burnt components. The fuses look ok. There is a faint sound coming from the ( coil ? ) on the anode PCB side. Sort of a faint electrical arc ???

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  • Michael Fain
    Michael Fain Sep 10, 2008

    Located possible fault with your help. IC401 was loose on the heatsink, C402 was ok, could not locate R510 but found possible burnt out IC circuit and bad connection to the PCB while in the location where R510 should have been near which has the only 2 watt resistor R508 2.7 ohms which might be a circuit mod.

  • Michael Fain
    Michael Fain Sep 10, 2008

    Bill, Who and where is PTS so I can contact them. Thanks, Mike

  • almckin5 Apr 15, 2009

    everybody that bought mitsubishi big screens has the same or similar problem.

  • saintcyr May 25, 2009

    We have this same problem but with a twist... The video goes out but the sound is still on and clear. I turned off the TV for a week or so and turn it back on and it works. BUT it only works for a week or so. Its been working for a week now with out any major problems. Does any one have a clue?

    Larry

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  • Master
  • 934 Answers

That is a VZ3 chassis, similar to Mitsubishi models Ts-4545, Ts-5045, Ts-5545, Vs-4543, Vs-4544, Vs-5043, Vs-5044, Vs-5047, Vs-6043, Vs-6047 and has common failures in the vertical circuit, specifically vert Ic401 which is a La7845 which is usually caused by defective C402 100uf 50v and/or open 1.2 ohm 2 watt R510 next to FBT.
If not that check C268 off Q215 on signal board 22mf/50v and Ic200 on signal module Cxa2025s. However the vertical failure is more likely.
Bill

Posted on Sep 10, 2008

  • William Rayburn
    William Rayburn Sep 10, 2008

    Might want to take it in to a good qualified shop for the repairs, or even remove the board entirely and send it to PTS for rebuilding.

    Bill

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