Question about Mitsubishi LT37131 37 in. HDTV LCD Television

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My Mitsubishi LT-37131 was damaged when my electrical circuit lost the neutral wire. The voltage going to the tv was 250 volts between the hot and the neutral. The tv will not turn on and it it doesn't even have a power available light. I did look inside and verified that the glass fuse is good. Which board would you suspect is damaged?

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It should have MOV (130~150V rating) across the Line and Neutral after the fuse, unless this TV was made to work from 100~240v range. You should check to see if the 5vdc standby is evev working right now, withot it, nothing else will happen. Checkt the DC voltage on the large electrolytic cap (the one with 150~300uF 350~450VDC rating) in the AC primary side, it should be connected to the bridge rectifier, it should have around 160vdc (120v x 1.414) on it.
If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

Please see my basic troubleshooting guide here:

Failed TV and Monitors:

Learn about bad caps:

Capacitors kit: he can make you a set of caps.

Please post back what you find.

Posted on Nov 07, 2010


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Posted on Jan 02, 2017


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I have 2 hots from 240 raceway and common neutral a 250 watt bulb on 1 hot a 40 watt bulb on other hot cut neutral wire they stay on but 40 watt gets bright the 250 watt goes dim why is that

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In parallel (with neutral connected) each bulb receives full voltage, and then each bulb runs at watt rating.
In series (with neutral cut) the circuit is still complete through the two hots... except the voltage drops after each bulb... which affects the watt output on each bulb.

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