Question about Mitsubishi WS-55859 55" Rear Projection Television

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My Mitsubishi 55" will black out after so many minutes

My Mitsubishi 55" rear projection flickers at the top of the screen, then blacks out after 30 minutes or less but the audio is still on. I turn it off, then turn it on and it is fine. However, it has been occurring now more frequently. What is causing this and what needs to be repaired?

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  • raquino Jun 20, 2009

    Jan Mczeal,

    What is an optical block? and what is a driver in tv jargon? I'm familiar with loading software drivers on servers and PC's. Also, you mention that the tv will shut itself down to protect itself due to the driver, then you mention the cooling system. I will call in a tv repairman but would also know what would he be charging for those items discussed. Thanks... and could you give me more info.




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The problem is in the optical block..the driver heats up and shuts to protect itself from total damage..that's why it turns fine after a reset and shuts afterward..this problem will continue until the drive complete gives up..cooling system might not working properly or the drive has an internal short circuit and need to be replaced..a professional service is suggested..

Posted on Jun 20, 2009

  • Jan McZeal
    Jan McZeal Jun 21, 2009

    optical block is the circuitry that is in charge of giving you the video output..these drivers i'm talking about are electronic components not software..electronic devices such as yours are equipped with such protection systems..and it will work when a fault is detected..about the cooling system, try to see if there is any cooling fan and if it's working..if the cooling system is working but the heat sink is heating abnormally then the component attached to it is faulty..ask the repairman first how much he would charge you before you ask him to come..part replacement adds be sure the parts to be replaced are really faulty especially when he wants to buy it for you..


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Change the bulb,, it is over heating, had the same problem went out and bought a new tv just to find it was the bulb going bad

Posted on Jun 21, 2009


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