Do I need a TV Technician for NoSignal sign on digital TV ?

If you are dealing with OTA signal, you need to check a few things yourself. First, check that your antenna hasn't rotated out of alignment with your local transmitters. If you have only recently gone to OTA TV, use http://www.antennaweb.org or http://www.tvfool.com to check where your antenna should be positioned. (tvfool.com gives a more complete list of channels for most areas. antennaweb gives a very conservative list, even though it assumes an outdoor antenna.) Check your antenna wire(s) for damage. Sometimes the center wire in RG-59/RG-6 gets damaged as the wire is connected to the port on the TV or jack. Make sure that the surrounding shielding isn't damaged. Try a new cable (particularly if the connector was recently added/replaced).

Next what type of antenna are you using? If you have an amplified antenna, check if the amplifier has power. If you can, disconnect the antenna from the amplifier and check if the signal has enough signal strength for the TV tuner. (Also remove any splitters for a similar test.) I've seen amplifiers get hit by a power surge and turn into filters that block the signal.

You may need a different antenna. Outdoor antennas are recommended if your stations are more than 20 miles away or there are tall buildings, mountains, or trees between you and the station transmitters.

Next, if possible, check if the tuner from another TV can pick up the signal. Different tuners have different sensitivity limits. If that is the case, try an amplifier on the incoming signal.

If none of these tips help, you may need a technician to check things out. I hope this helps.

Cindy Wells