Static on TV
We get intermitent bursts of audio static which also shows on the screen as very small light bursts. More or less on one station or another (somewhat less on the stronger stations). Generally during mid day. Sometimes worse than others. Sometimes its impossible to keep watching because the sound (voices) get interupted too much. May go many days w/o happening. This may last a few minutes or a few hours. Picture seems unaffected.
CRT TV. Thru-the-air signal. Antenna is in the garage rafters so wind can't shake it. Nothing driving by. Nobody walking by. Nearest neighbor house is about 100 feet away. Can't correlate it with weather.
Seems to me it must be from an external source because we've turned off every thing in the house.
What should I look for? Will it damage the TV?