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one of two basic things here, unplug set to see if after a while it helps, and if channel scanning up or down on its own suspect the button associated with the direction it changes is a bad one.
I'm sorry for the difficulties you're experiencing in getting the few channels. I suggest that you unplug the TV to perform a power resetting and then perform auto programming to resolve the issue. Please let me know if the issue persists.
there is every possibility that the channel (ch - and ch +) button on the TV is stuck. This can make the TV channels change by itself. This also applies to the remote control (if any).
Turn off the TV, use your thumb to flip through the channel (ch - and ch +) button on the TV. This will free the stuck button. Also, check the channel (ch - and ch +) buttons on the remove and make sure it is also not stuck in.
If the above doesn't solve the problem, then it means fault is from the control board inside the TV. It maybe defective or needs servicing.
The board controls the buttons on the TV and it can be found on the position of the channel (ch - and ch +) inside the TV.
Note that TV stores a lot of current. So if you want to disassemble the TV to check the board allow the current to discharge by remove the TV plug from the wall and wait for about 1 hour before attempting to disassemble the TV.
Some of their very old sets the video input was located on channels in the 90's; Try scrolling down from 99 to 90 to see if you locate the video input; this is just the way they did things in the older sets.
Before you rate this solution let me know what you find first.
You could have problem in SSB board the one that has tuners on it to replace ssb borad 253.00 plus labor Repair cost 445.00 use your external jacks for video see if you have the channels then. No more then 2 missing channels verses no channels and SSB cost,I would leave it alone. But if you need any of the boards to this set call 1-800-648-6657 UED
Your set uses the 195 series chasis. The only thing I can think of which would make the channels scroll by themselves is a contaminated PC board and pushbuttons behind the buttons on the front of the set. This is usually the case when spray cleaner or some other fluid is sprayed or spilled on the screen, and it drips down onto that board. To prove this, remove the back cover and on the top of the main chassis, where the top of the picture tubes are, is a small PC board with the remote reciever and a couple of jacks. The smaller jack is for the speakers and the larger jack is for the front panel PC board. Unplug the larger connector which goes up to the front PC board and then turn the set on with the remote. If the set works normally, the front PC board will have to be removed and cleaned or repaired (or just leave the jack unplugged and work the TV from the remote only). If you do not have any experience working inside projection sets then allow a qualified tech to handle it for you.
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