How can I do to seethe channels on TV sansui hldc2212A

1) Connect the converter box to a good digital TV antenna and position the antenna as high and as close to a window as possible.
2) Set the converter box 'output switch' to an unused channel for your area. (Usually 2, 3 or 4.)
3) Connect the output of the converter box to the 'antenna input' on the TV.
4) Turn on both units and set the TV channel to the same output channel selected above.
5) Now select TV channels using the converter box remote only. The TV should receive all converted channels on the preselected channel.
6) Adjust the TV antenna for the best reception for all channels.

Is it supported by the TV? Are you licensed to receive the Digital channels, i.e., is it a payable channel?

Download the user mnaual to your TV. It will have all details. You haven't given andy detail of your Sansui TV here. Want its model number to give you more details by this window.

Click here and try to download the user manual to your Sansui TV, and refer it how to make a factory reset to your tV. If it do not help you, the main system memory IC might be faulty, and should be replaced.

It seems you are using a set top box to access tv programs. I that case when a person changes the channel all the connected TVs will change. You should use extra set top box for multiple independent viewing.

the information I needed was in the FAQ's area. Thanks

Take a gun and shoot your self.

You need 2 antenna cables. wall socket ----> DVD antenna in and DVD antenna out ----> TV

You'll most likely need a Sansui remote made to work with your specific model TV. I have similar problems with my Toshiba TV. Check eBay.