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Mitsubishi Projection screen tv troubleshooting

Discussion in 'Electronic Repair' started by Raventy, Nov 11, 2006.

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  1. Raventy

    Raventy Guest

    Hey guys,
    Ive got a 50" mitsubishi VS-50603(I believe thats the model #.. aint at

    home now) projection screen tv which recently would sometimes boot up
    display a mostly blue screen.(other colors were showing just it was 90%

    blue dominant) Once the tv was powered off for a second or two and
    turned back on the blue screen would go away. Then just the other day
    the tv stop displaying an image at all upon turn-on. I opened up the
    back and found no blown fuses(checked all 3 of them) and noticed that
    the crt heaters are not lighting up as well. When I press the power
    button the tv makes the "click" sound as if its about to turn on but
    stops there. When I power it off I hear a high pitched "draining" sound

    which seems to be coming around the flyback though I cant say for
    certain. Anyone know what could have gone wrong and where I should
    start to troubleshoot? Thanks!
  2. The first thing to do with this set is to look very carefully for coolant
    that has leaked onto the boards. These sets are very reliable other than
    the coolant leaks and related corrosion.

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