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I had just put in about $500 worth of work into this TV to clean the color tubes of bacteria and other miscellaneous problems - They kept my TV for 3 months before bringing it back. It worked for 2 days and then everything went green, so they came back and took it for another 30 days before bringing it back.
This new problem could have been anything as simple as a tube to a circuitry problem. We decided to junk this Mitsubishi product. I have a 30 year old Curtis Mathis TV that I've never had any problems with (that's 3 times the age of the Mitsubishi).
We've opted for a new 50-inch Panasonic Plasma with the anti burn in technology. I will not buy another Mitsubishi product, or a rear projection TV of any brand after this experience.
i have seen this before and it may be the front power button being stuck and when your remote turns it on the stuck button turns it back off again. I have an older mitsubishi that will not boot up right sometimes and i have to unplug it and plug it back in fot it to come on. I used to pick up broken tv and fix the power buton and resell them
you can do a self-diagnosis test by pressing the menu and input/device button on set for 5 sec and see what error code it gives you. Count the blinks followed by a short pause then more blinks. This is the error code.
Could be a power supply problem - sounds like the feeder cap was failing slowly until the heat stress on the regulator finally gave out.. You'll want to check the following: Strm6515A (That's the regulator, R9a23 1.2 ohm, C9a15 220uf/35v , R9a0 1k all in that feed circuit for the regulator.
1. MAY BE INTERMITTENT, SELF-DIAGNOSIS ERROR 23 OR 24. CHECK SOLDER CONNECTIONS AT CONNECTOR "DY" ON THE YOKES. 2. SHUTDOWN AT POWER WITH SELF-DIAGNOSIS ERROR 23 OR 24. CHECK C411 2200 UFD 35 V AND C412 10 UFD 50 V, BOTH LOCATED ON THE MAIN PCB.