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Mitsubishi CS-31303 will not power on.

The TV was turned on when connected to a small UPS unit which power was most depleted. When powered on while still connected to the depleted UPS, the TV united sounded as if there was some type of power surge and did not power on. Now when power button is depressed on the unit or the remote, the unit sounds as if it will turn on. There is a a high pitch sound and turns back off without picture or sound. The fuses are okay. Do you have any idea on what to address here?

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I have Mitsubishi TV CS-31303. It has transient issues. At turn on, it shows horizontal fringes for some time along with picture, then single horizontal line only and then after some time finges at the 1/3rd bottom and then clear full picture. After some more time the clear picture turns into horizontal fringes at the bottom 3rd of the picture and picture rolls and then again the picture is very clear. Some one said that there is an issue in the signal PCB. Where is it and what componets are at fault. I do have service manual which shows circuit diagrams.

Posted on Sep 29, 2010

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