Only receiving Channels 50 and above; no lower channels
My mom's RCA television is about 9 years old. Suddenly it started receiving only channels above 50. None of the channels below are coming through. The cable company has checked it out and assure her it is not a cable issue. Could it be the tuner? Is it worth fixing?
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Re: Only receiving Channels 50 and above; no lower...
It could be anything from corrupted data in the EEPROM (a memory IC that stores all the channel information and picture settings) which is usually caused by bad ground solder connections inside the tuner itself which is built into the main circuit board and would have to be repaired, not replaced or components inside the tuner section of the main PCB. With that being said - if you have to get a technican to come to the house and repair the set then it would probably be best to buy a new HDTV set. If you can take it to a repair shop capable of fixing the tuner, it could cost close to $200 to repair is my guess, and may work OK for another year or two before the picture tube finally wears out.
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Most tv's have an Antenna mode and a cable mode. If you have cable tv service, the cable mode must be selected in order to receive channels higher than 23. Then you must auto program the channels thru the menu screen on the tv to receive the channels above 23. If you have a house antenna or rabbit ears, its hit or miss on receiving all VHF and UHV channels.
the switches in the front of the tv are usually the cause of this kind of problem. the fix is to replace all of the switches, because if 1 is bad the others are not far behind. each switch from rca is $5 to $10 each.