Question about Mitsubishi VS-50605 50" Rear Projection Television

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Lightning strike i had lightning strike the tree behind my house and it blew my tv. the light stays on when you plug it in but the tv wont do nothing. So i bought a service manual and it says if the green light dont blink when you hold the device and menue button in that the microprocessor is not functioning properly. Is this true? or am I missing something? I tested all the fuses and they check out. Do i need to try something else. How much is a microprocessor and where do i get one. PLEASE HELP!!!

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This model is famous for capacitors being bad in the low voltage regulators on the signal board. Also has been known for cold solder connections in the power supply to the convergence IC. I don't have my notes at home but I belive that model only uses one IC for convergence, STK393-570. You cant see it from the back because of it being hidden by its heat sink.

Posted on Aug 09, 2008

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Posted on Jan 02, 2017

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What does it mean when one reads FD in the panel and the lights on the panel aren't stable?


The control board to your range may have been damaged because of the lightning storm. It happens when lightning strikes a power line and sends a surge of power to your home. This large current surge can easily damage electronic circuits. More often than not if a device is on and lightning strikes, that is when the device gets damaged. During large lightning storms it is best to turn off all electronic devices. The electricity going to your house is fine now and that is probably what your electrician checked.

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Yes. Although the tires are suppose to insulate, there is enough humidity to allow the air to carry a charge. The ECM for example, can be interfered with by Radio frequencies. A lightning strike produces all kinds of freqencies beyond visible light.

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Hi Johnson,

Only 50% chance that the symptoms was caused by a lightning strike because your cable box was powering on fine. Most of the cases when lightning strike near to your area, possible of multiple damaged to the electronic device not only to one particular appliances, most especially if they are plugged into the outlet. Also, fuse will blew because of excessive voltage.

I've suspected that the symptoms was only a co-incidence of lightning strike. If you can hear the clicking of the relay, this is only means that the standby power supply is working fine. However, this board has multiple output voltage feeding the other boards to function well. This kind of symptoms is a power supply related problem.

If you have necessary tools and test instrument and handy with electronics, you can troubleshoot this board to find the faulty parts like open fusible resistors, shorted transistors/IC's, leaky electrolytic capacitor, etc.
Another option is to replace the entire power supply board, this is more convenient if you are going to DIY because no soldering required. Try to find you board HERE. Type the model no. of your unit to the search engine, available parts/board will be display.

Hope I helped you.
Have a nice day!
Thanks for using Fixya.

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I would start with your power supply. If you took a surge it is possible that you only blew a fuse. If it is a blown fuse, make sure you only use the same type fuse.

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Otherwise, you can expect to pay between 275.00 for a repaired board OR between 350.00 and 450.00 for a replacement board from Sears or Mitsubishi.

Hope this helps. I know it is frustrating but be patient.

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email: PentiumDreams@aol.com

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