 WOT: Rear projection tv help, Mitsubishi 50" |
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| Sparky |
 Aug 16 2005, 07:21 PM
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Mahna Mahna!  Group: Members Posts: 1,134 Joined: 21-June 03 From: Spencer, MA Member No.: 847  |
I've got this older 50" Mitsu that is suddenly acting up. When powered up the display hourglasses then it powers down after about 2-3minutes. Then will not power up again until cold. I think I've narrowed it down to either crt coolant leaking from the green crt causing some arcing in the yoke or something in the primary geometry circuit. Anyone know how to remove the crt's in a Mitsu? I think I can reseal it and re-shellac the yoke. I don't feel like spending the cash to replace the tv and the service company I called blew me off today.
Thanks! Mike D. |
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| 914GT |
Aug 24 2005, 05:19 PM
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Senior Member Group: Members Posts: 1,101 Joined: 11-October 04 From: Tucson Member No.: 2,923 Region Association: Southwest Region |
Hopefully it's not a shorted winding in the yoke. That would hose the geometry then eventually overheat and shut down due to the abnormally high currents. As mentioned above, electrolytic caps often do cause problems especially with DC supply circuits. A close inspection sometimes shows the tops of the cans bulging when they've gone bad. The result is a lot of ripple/noise on whatever voltage they are supposed to filter.
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Posts in this topic
Sparky WOT: Rear projection tv help Aug 16 2005, 07:21 PM
Verruckt I have the same exact old tv. If you check out on ... Aug 16 2005, 07:25 PM TonyAKAVW Sounds a lot like a cold solder joint to me or som... Aug 16 2005, 08:12 PM Rider914 Check your caps - Get some freeze spray and chill ... Aug 24 2005, 04:32 PM Jeffs9146 there is apparently a solder connection that crack... Aug 24 2005, 05:08 PM bd1308 caps are the biggest killer with computer motherbo... Aug 24 2005, 05:08 PM Rand Install a Pertronix. And check the longs for rust.... Aug 24 2005, 06:34 PM
bd1308 scared? Ha, I laugh in the face of danger
--Simba... Aug 24 2005, 06:39 PM |
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