The problem of your tv first is to check IF transformers located at the chroma board or in the tuner.If you fine burn part on it replace it and remember IF transfomers are non-replacable part you can only obtain to buy at electronic surplus. Second if all IF transfomers were located at the Tuner try to reheat it and if you'de noticed nothing changes replace a new tuner.
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Usually channel 3 is picked up on a channel scan when there is an input device connected to the TV via a Coaxial Cable, thus using only channel 3 on the TV itself and using the Digital converter box to tune in the channels.
The TV will need to be Digital ready to connect only a Digital Antenna to it and programmed to receive the Digital Broadcasts over the air. If you are certain that this TV is Digital Ready (TV manufactured from 2009 to the present) you can use the menu button on the top, side, or front of the television, then use the channel / volume buttons to move around the menu, and the input button as the enter button.
You will want to select Antenna (ATSC) signal before starting the auto program so the TV will be able to recognize the Digital Channel Broadcasts.
assuming that you can "pick up" channel 60..and that the signal is strong enuff...that is part one..make sure you have a good antenna connection and that the antenna is positioned for maximum pick up, then do the scan mode on the tv via the remote control. it will re scan the channels and if the signal from channel 60 is being picked up strong enough, it will program the channel into your set automatically.
Ill assume that you dont have cable. when you go to auto locate channels make sure that you have the digital option selected. This way your tv will pick up digital channels. This is a newer tv with a digital tuner already built in so it should do the trick. When i did mine I only had 3 channels in digital. Hope this helps
In order for the TV to work with the cable box by using a piece of coax and tuning the TV to channel 3, you must make sure the TV is in "Cable" mode on the tuner and not "AIR or Antenna" the frequency maps are different between these types of service and channel 3 cable will not be the same as channel 3 on Air or UHF/VHF.
Often there is an auto program feature on TV's that will "scan" for all available channels, and this should select the proper input type.
Most TV's have an option in the menu for antenna/air and cable. I t may also be labeled digital and analog as well. You need to ensure that you have this set to the signal you are trying to receive. Some TV's have two coaxial connections at the back usually labeled antenna A and antenna B or air and cable. If your's has this option you will need to be on the correct input for the signal you want to receive. I hope this is of assistance to you and thanks for using Fix Ya.