jrlouie, Call your local electric co (the folks you pay monthly for elec service) and have them do 3 things. btw: the following is a common occurrence

#1 Tell the elec co that you may be experiencing voltage spikes from a lose connection or lose neutral.

#2 Have them Place a voltage meter, and or a recording voltage meter on your incoming electrical line to the main disconnect or electrical meter on the side of your house. This way they can check for a line voltage spike to your elec box.

#3 Also have the local electric co, go up the power pole and tighten the connections. I can tell you from experience that the connection at the power pole for your main drop to your house can develope a lose connection and this can and will cause a voltage spike on the main line of sometime 10 to 20 volts higher than the other main line if you have a (LOSE NEUTRAL)

Many years ago I designed and constructed cable tv systems from the ground up, and we had a head end full of electronice that keep getting hit from voltage spikes due to a lose neutral.
PapaBear