What sort of testing meter do I need?
I'm still struggling with severe TV interference on hot afternoons. The TV guy is barking up the wrong tree, by replacing the antenna. Now he wants to do more testing but I don't trust him.
What device is needed to see if some outlet is mis-wired?
Also....how would I test for a defective door bell and/or door bell transformer. I'm thinking these are things we can do on our own.