Question about Mitsubishi WS-65907 65" Rear Projection Television

7 Answers

Push power and the light goes on and nothing else.

Hit the power button on the remote and you hear the power go on and the green light lights up and that's it. The sound comes in through the amp, not the TV. None of the buttons work on the remote ( input etc.)

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  • 7 more comments 
  • rhwilder Nov 12, 2008

    I did the ten minute thing and nothing. And I have sound through the amp as I don't use the TV speakers. So again, the green power light comes on and nothing else. No picture nothing....

  • rhwilder Nov 12, 2008

    I have the Mitusi remote and I have a Dennon remote that controls the TV also and the TV does not respond to it either.

  • rhwilder Nov 12, 2008

    I put new ones in.

  • rhwilder Nov 12, 2008

    I can turn the TV on by pushing the button on the front or by using the remote. But after taht nothing happens. I can't change the inputs, no picture nothing.

  • rhwilder Nov 12, 2008

    The only question I have with that is that the remote will start it up, is it not using the sensor?

  • rhwilder Nov 12, 2008

    I get sound through my home system. But nothing happens when I hit the remote or the TV. I acn't switch to the Video game or switch to the DVD or the Laser Disk. The input switch does nothing.

  • rhwilder Nov 12, 2008

    The remote will get the TV's green light on and that's it.

  • rhwilder Nov 12, 2008

    There is noting on the screen, not even a slight change. It looks like it was never turned on. I don't use the sound from the TV source and cant change the setting because the remote wo't work.

  • rhwilder Nov 12, 2008

    Thanks, I have unplugged it and will wait a few hours. I also have a Tech coming next week. As a follow-up I will let you know what the problem was if the unplugging does not fix it.

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7 Answers

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  • Master
  • 6,966 Answers

Hi,

Initially, what could be deduced:

  • the remotes work;
  • the sound of the TV works;
  • no video display;
  • TV is getting power and standby voltages are present;
  • main/logic circuitry of TV fails to initiate.
What could be done:
  • perform a DIY (do-it-yourself), check the TV, reference a service manual and or a schematic diagram;
  • seek the services of a qualified professional or a service center.
If performing DIY, areas to check:
  • number and sequence flashing lights, would indicate probable defective area and where to start;
  • follow checklist of service manual.
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information. Good luck and kind regards. Thank you for using FixYa.

Posted on Nov 12, 2008

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  • Master
  • 3,037 Answers

Can you tell if the screen actually lights up (not into any picture of course) but into a different shade of black? Also, the sound or audio, is it something that is coming from a channel or anything or just noise

The reason there is no picture is probably because of loss of the high voltage. The high voltage is what produces the energy for the raster lines upon which the video is modulated.

Therefore, the video and deflection circuits may be working just fine but you cannot see because there is no high voltage to the picture projection tubes.

Now, it is possible, also that power to the projection tube filaments has been lost, or that the power supply to the biasing voltages is defective or that the picture tube sockets are corroded, but the overwhelming cause among projection sets is loss of high voltage.

Refurbishing the high voltage will probably cost $250 or from anywhere you go. Even if you do it yourself and buy the parts wholesale you will not save a tremendous amount. So, unless you are very handy and know how to troubleshoot, solder, repair and test, I think you are better off finding a good shop for the repair.

Please get back to me on my first paragraph

Posted on Nov 12, 2008

  • Benjamin Patri
    Benjamin Patri Nov 12, 2008

    like I said, probably high voltage is going to need to be replaced

    The restoration of the high voltage in your set requires the work of an
    experienced tech; parts and labor is around $250 to $300 plus a house
    call.



    Therefore, you must decide if the set is worthy of this kind of
    investment. Normally, a good, big screen should have a life expectancy
    of around 15 years. Yours is 10; but it is a Zenith which, according to
    my observations, does not last quite as long as other makers.



    If you fix it, the statistical probability of having another repair necessity within a years time period is quite high.



    So, it is a big decision what to do. If it was my set I and I had
    plans to buy a new unit in the near future, now would be the time.



    HOWEVER: Before we give up on it, be sure to do the free repairs. I
    will give it a 25% chance of helping; but it will cost you nothing.



    ONE: Do the hard reset. Unplug the power cord for 4 hours then power
    it back up. That will restore all internal soft codes into the set.



    TWO: Give it the whacking test. Just bang on it with your fist;
    strike it at the top, back, sides, etc, to see if you can restore the
    picture. It is possible that some loose wire, loose connection or cold
    solder joint has begun to act up and the banging will sometimes get it
    back in order. Worth at try.



    Let me know if you need more ideas.


  • Benjamin Patri
    Benjamin Patri Nov 12, 2008

    sorry about the zenith part in my previous post, this is a common problem with projection screen tvs so I copy and paste past posts to speed things up if you are confused, but the same applies to yours

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  • Contributor
  • 46 Answers

Hi
are you actually getting sound from a channel at the amp or just noise,if you are getting voives the the set is partially coming on

Posted on Nov 12, 2008

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  • Expert
  • 347 Answers

Hello rhwilder,

Can you turn your TV by pressing the button on the TV panel? I mean, is the problem in your remote or in your TV not turning on?

Posted on Nov 12, 2008

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  • Master
  • 734 Answers

The problem is highly likely to be in the TV's IR sensor or its related circuitry. IR is IR... if a remote has been working fine to control a couple of different systems but one system suddenly becomes uncontrollable, and if a new, correctly-programmed remote shows the exact same effects, the probability of an identical failure within both remotes is near the vanishing point. Which leaves the uncontrollable system as the likely cause.

Posted on Nov 12, 2008

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  • Mitsubishi Master
  • 19,396 Answers

Try first unplugging the unit for ten minutes, check the wirings regarding the sound.

Posted on Nov 12, 2008

  • 2 more comments 
  • Ginko
    Ginko Nov 12, 2008

    If the TV is off, with only a diagnbostic led on, and does not startup , then the TV is in protect mode because it is faulty.

    That means that the main chip detected a fault and sent the TV in protect mode, activating the safety switch.

    When this happens the first thing to do is unplugging the TV, first for ten minutes, just to test it , then for two or three hours, so to drain power from TV completely, and reset the TV.

    If TV does not restart even after leaving it unplugged for few hours, then that means that there is really a faulty component that need to be replaced inside the tv.

    To fix it the TV must be taken apart and tested toroughly by a technician.

    Common faults can concern power board, deflection circuits, lamp and convergence board. The TV must be inspected by a technician to find out.




  • Ginko
    Ginko Nov 12, 2008

    What does it mean " the remote will start it up" if it does mean that you get raster (picture with something displayed on tv screen), then the TV is starting up.

    If by pressing the remote you get TV clicking but no picture coming up, then the remote is not starting the TV, as the internal protection circut activates the sfety switch that keeps TV off to avoid further damage.




  • Ginko
    Ginko Nov 12, 2008

    Tha means that the tv is in protect mode, as I told you, when that happens you get the led on but tv does not start fully to prevent further damage to internal components, did you at least try unplugging tv.

    I also re-post here my previous comment for better clarity:

    If the TV is off, with only a diagnbostic led on, and does not startup , then the TV is in protect mode because it is faulty.

    That means that the main chip detected a fault and sent the TV in protect mode, activating the safety switch.

    When
    this happens the first thing to do is unplugging the TV, first for ten
    minutes, just to test it , then for two or three hours, so to drain
    power from TV completely, and reset the TV.

    If TV does not
    restart even after leaving it unplugged for few hours, then that means
    that there is really a faulty component that need to be replaced inside
    the tv.

    To fix it the TV must be taken apart and tested toroughly by a technician.

    Common
    faults can concern power board, deflection circuits, lamp and
    convergence board. The TV must be inspected by a technician to find out.





  • Ginko
    Ginko Nov 12, 2008

    After you get a response from the technician let us know.

    Hint: be very careful about the whacking test, although wacking test was popular on old CRTs, on a projection TV like this a wacking test can easily damage the lamp, better to avoid this practice on modern projection TVs.

    Good luck.

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  • Expert
  • 196 Answers

Remove the battery and reinsert it then check.

Posted on Nov 12, 2008

  • mmechanics Nov 12, 2008

    also check if any of the button has got stuck in the remote control.

  • mmechanics Nov 12, 2008

    its the problem with the sensor which should function when the button is pressed but it is not functioning .so get the sensor replaced and it should work properly.
    to get the sensor replaced will not cost u much .
    thanks.

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