Question about Mitsubishi WS-55907 55" Rear Projection Television

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Tv powers on and goes off after about 3 seconds

I have a Mitsubishi WS-55907 55 in. Rear Projection tv. When you turn on the set the tv powers on and goes off after about 3 seconds. I performed the error code operational check and it indicates an error "22" -short protect circuit. Is this something that can be fixed easily? I am not sure what short protect circuit means, or how to go about repairing it. Is it best to call a service tech? Thanks in advance for any responses.

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Re: tv powers on and goes off after about 3 seconds

This set has a problem in the horizontal sweep circuit or in the main power supply. Most likely a failed component, and the set shut down to protect the rest of the circuit. If you know how to read a schematic diagram and how the circuits operate, then you will need a good multimeter and an ESR type capacitor checker to find out the short in this set. Sometimes the CRTs(Picture Tubes) will leak the coolent fluid out and onto the printed circuit boards. Also sometimes the convergence IC's can cause this problem, but if that is the case the small little pico fuses will pop also. If you have had no solid state or printed circuit repair experience, play it safe and call in a trained tech. Good Luck

Posted on Mar 17, 2007

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