A guy gave me a tv. It is a 52 " Mitsubishi VS50501. He said it works but it will go off and not come back on for a while and it is progressively gettting worse. He said he thinks its a relay switch. Sounds like to me its overheating but idk if tvs have an internal cooling fan. I know nothing about tvs but I am going to try to fix it myself vs. lugging this 200lb tv to a store to fix. So my question is, has anyone ran into this problem? If so what was it and send me a link to where I can get the part.

nestor, October 2012

If it's overheating, and getting worst, it could realy be caused by some dust build up or something obstructing the air vents.

Without opening it, you can try vacuuming along the air vents.
Make sure that all air vents are free of any obstruction.

You may need to open the case.

Before you attempt to open the case, DISCONNECT the power supply and wait about a day to let the capacitors discharge themselves.

Use a can of compressed air to blow away any dust accumulation, in particular on any electronic and electric components like resistors and capacitors. If it looks like there is a lot of dust, working outside, on a windy day, can be a realy good idea...

Electro, October 2012

I have heard that this fault (overheating) is common in Sony TVs but I don´t know in Mitsubishi.

Probably there is a trouble on power supply board.....usually bad capacitor

It is not advised to fix power supplies of gadgets because they can cause shock. I would recommend you check with a technician for help.You can call a local TV repair service, here you are a tech website www.tvrepairjacksonvillefl.com

alan, October 2012