My Toshiba TZ43V61 is not a very old TV (maybe 5-yrs.) yet we recently began having a major problem that is a real nusiance. There are times that our tv turns on just fine, no problem at all. Other times we try to turn it on and get nothing - the red power light just flashes. If we shut the power cord off for various amounts of tiime, it will power up when it is ready, otherwise we still get the flashing red power light and have to keep unplugging and replugging until it decides to come on. Once in a while, not very often, well be watching the tv after finally allowing power-up and coming on, and after an hour or so the tv will just shutoff and when try to turn back on, there is the red power light blinking and will not turn on. The whole waiting and unplugging process starts again. When tv does come on it still has a great picture, sound, etc. just like new. Please help. Any suggestions greatly appreciated.