Question about Toshiba MD20F51 20 in. TV/DVD Combo

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I'd like to add another on the power problem

Just happened for the first time tonite. Nothing has changed with the TV. It worked great this morning, my wife went up tonight and used the remote to power it on. The red light comes on for a second then goes off. Same results when using the PWR button on the front of the TV. The TV appears to be functioning just fine, it just won't stay on.... Hit power button, thing starts up for about 1 - 1.5 seconds, then powers off. Don't know what other details I can give.

This is the exact model I have...

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A common failure in these units is Q401, Toshiba p/n# Bz510004 is a 2SA1624 (HV amplifier) which finally fails due to a resistor R408 Toshiba p/n# Bz210285 a .47 ohm/1w metal oxide having changed in value and at last opening...
This isn't an expensive repair for a qualified shop - but I would suggest not continuing to test your shutdown circuit. What's happening is that HV (high Voltage) is builds beyond tolerances and the shutdown circuit turns your unit off to keep from causing any severe damage. If it failed you could likely burn out the SMPS or cause some substantial damage..
Good Luck!

Posted on Dec 01, 2007


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