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People are giving away their older TV's as they upgrade to new wide flat-screens nowadays. That makes your TV not worth fixing. Keep checking Craigslist and your local thrift stores for one that's cheap or being given away.
Even with the tv turned off, the power supply is still active.It's supplying voltages to the microcontroler, that's why each time you press the power button on remote the tv respond by turning on. First check the power cord to be well connected in the power-bar and if it's ok...well the power supply is defective and due to the high risk of electric shock i suggest you to call a technicien.
P.S. I respond here because I don't know why our chat session got disconected.
It needs a new FLY BACK transformer. That is what you are looking at. The origionals are not made for the set any longer but insist on having a generic on installed by a local TV shop. I just put one into a RCA 31" and it works nice. Don't throw away the TV. Get it fixed. MAKE SURE YOU INSIST THEY USE THE GENERIC ONE! THEY DO WORK!
I took my TV apart and solved the problem on my own. For those of you that have basic electrical skills and can solder it is an easy fix that only takes about one hour. I removed the rear cover and pulled the left side board which houses the flyback transformer, easily identifiable by the big orande wire coming off of the top. If one looks carfully the soulder connection will probably be broken or loose which can be caused by movement or heat. I resoldered all of the connections for the transformer about 12 and the grounding wire to the left, a single black wire that plugs into the board. Once this was done I put ti all back together again and no problems since!