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Sounds like you have a bad tuner assembly depending on the tv sets make and model number, the set could also maybe need to be reprogram in the sets set-up section.
techman
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TV's of this era have two modes that the tuner can work in. One is the AIR mode and the other is CABLE. In the air mode the tuner picks up only "off air" frequencies,... and up to channel 13 they happen to be the same as cable channels 2 thru 13. If you are using cable you will need to go into your on screen menu and find where to change the tuner from "air" to "cable" to get channels above 13. Older sets had a switch on the front and sometimes the back to select the tuner mode.
I don't know the exact step to set it because I don't know you model TV. When you go to menu set channels it should give you the option to choose cable or air. If you pick cable all your channels will be in VHF which is what you want. If you pick air the first 13 channels will be VHF and the rest will be UHF which cable don't work on. After you pick cable then auto program and you should get all your channels.If this helps you and I hope it does give me a vote please.
Your tuner settings must be set on broadcast instead of cable.
Below channel 13, they use the same frequencies so it doesn't matter.
Find the tuner settings page in the menus and change the
cable/air setting.
If you get channels 2 to 13 nice and clear but the rest are snowy, it means that the TV is set to the broadcast channels, which means that for the channels above 13 it is tuning in the old-fashioned UHF channels. If the TV is set to the cable mode then it tunes in cable channels above 13. To do this, enter the menu and navigate to the tuner settings, set the tuner to standard cable and then do the autoprogram, and the tuner's memory will be set for your cable system.
Apparently your TV is set to the "standard TV"
position. Before you auto program your set, set it to the cable mode and then do the autoprogramming.
In the standard TV setting, you just get off the air channels 2-13 vhf and 14-83 uhf.where as in the cable mode you get vhf channels 2-13
plus your cable channels.
Stargazer
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