I have a Toshiba TE50T11 (chassis TAC9955) rear projection TV that was struck by lightning. When I try to turn it on, you hear a click, and then the front LED blinks red. Once I got the set to turn on for a few seconds, and there was perfect sound, and a good picture, except that red was the only color in the picture. I have inspected all of the boards and there is no apparent burning or exploding of any of the components.
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your tv may have ben magnetized by the lightning strike.
tv's have an automatic degaussing circuit that demagnetizes
the pix tube when the set is turned on. this degaussing circuit
may not be working or magnetism may have been too strong for
the internal degaussing to correct.
contact local tv repair shop in your area see if they can manually degauss your set , it should be a min. service charge around $25.
Based on the fact that when you remove the back and press on things making the set work for a while I would say that you have bad (cracked or cold) solder joints. If you can solder, disconnect power, remove the board (the one you normally have to press) and solder all the connections or at least any feed throughs, major power componnents and anything suspicious looking under magnification. If you can not solder you will need a reputable shop to look at it. Cost should not exceed $125 US. Good Luck.
This set is pretty common for the regulator IC to go bad. Its inside on the power supply Printed circuit boad assy. It will start with STR#### and have 4 digits after the STR####, depending on the model of the set. Good Luck