My television is about 11 years old. The picture is great and so is the sound,however, here lately when we turn it on it will turn on to one specific channel and stay there. For example when we turn it on it's on channel 49 and the sound is a little distorted and even if you try to change it the TV will show that your on channel 4 but the picture is from channel 49. Sometimes it will switch to that channel all by itself. If we turn it off and turn it back on sometimes it will fix itself but now it's doing it more often and it's harder to get the other channels back.
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Re: Television stays on one channel
The tuner is not defective. I have seen this many times before. The tuner has a row of pins that are soldered onto the main board, and some of those pins have cracked loose. When the clock or data pins are cracked loose then the tuner will stay on the last channel it has tuned in even though you are trying to change channels. The commands from the main microprocessor are not reaching the tuner so it stays where it is. Resolder the pins on the tuner and your set will return to normal.
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your problem is more likely to be in the high voltage fly-back transformer or HV tripler supplying high voltages to the anodes to your picture tubes these voltages range from about 20 to 40 thousand volts, replacing these components are relatively reasonable in price and depending on where you live will cost no more than about 300 dollars
Yes the problem has been solved. finally. The information on your web site was correct but the replacement board that I needed was no longer available. I ended up taking it to the local repair shop and he "worked on the board" that was messed up. Cost about the same as a new board would have, if I could have gotten one. Thanks for the great web site.