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On a Phil/Mag LCD mod# 32MF231D the set shuts down after about 10 minutes. Trying to figure out if the power supply is defective or the main boarde is telling the supply to go to sleep. Found a bad cap(47u/50v) on supply. No change. The big caps are not domed or hot.18volt and 24 volts out are smooth.Ideas? Case histories? dachshock@earthlink.net

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  • dachshock Apr 17, 2009

    Thanks Guru I AM a tech. The biz is called Shock Therapy Electronics. 9000' in the Rockies. Overheating is a common prob @ this altitude. Extra sinking is a regular task. I'll try it w/ asheet metal plenum &fan

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If you are a technician and you know what you are doing, start the Set with cover open and point a fan as big as possible toward the main board, if the TV stays on longer or does not turn off at all then it was an overheating problem on main board. Replace cooling system, or even better add an additional cooling fan to the heath sink.

If this was not overheating test inverter and power board.

Note this model suffers from overheating related problems, but as you pointed out, a faulty power board, or a faulty inverter board can cause the same kind of shutdown.

Here testimonials from users having the same problem on same model. This is the most complete thread about this model. For many of them it was overheating: Magnavox 32 LCD TV keeps turning off

Posted on Apr 16, 2009

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You can see what the price is if we confirm a problem and are able to fix it - the cost is fixed and is at our site.

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Please rate if this helped :)

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