Without any pattern my tv will turn off while in use. After unplugging then reinserting the power cord the tv will play for a while and suddenly turn off again. Red power light will begin to blink after the tv loses power. There is no sign the tv is hot according to touch. Also there is a small distortion of color in the middle of the screen, this happened recently after the tv began to shut off on its on. I would like to fix it but am ignorant in tv repair and would rather not be taken by a servicemen. Any suggestions?
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That problem is usually cause of faulty capacitors on the power supply board..
Just follow this instruction to fix your TV..
1. Open the back cover of your TV. 2. Look at the power supply board..Its normally connected to the power cord.. 3. After that,,try to look at the actual image of capacitors if it is bulged on the top so that you can easily determine the bad capacitors.. 4. After that,,try to replaced the bad capacitors using soldering iron and soldering lead..replaced the capacitors only with the same type ratings and value.. 5. Some of the capacitors not bulged so its better if have a capacitance meter
I have the same exact problem...for a few weeks the TV would turn off and the red power light would blink. Then the other day I started having exactly the problem you describe...green screen for a few seconds and then total shutdown.
I have a Toshiba 46h84 with similar problem that needs a new green crt. Mine does not have a cooling fan. I don't know if having a cooling fan would help the problem, but mine didn't come with one. There are rear projection TV's that have bulbs in them that require a fan. This particular model uses a red, a green, and a blue crt to generate the picture and probably doesn't need one.