Because you mentioned power surges through storms you might just want to put in a new time delay board and be done with it. See if this corrects the problems. These boards can be sensitive to overvoltage or anything abnormal and they will fail. The board doesn't cost that much compared to continuous returning to the job.
"The American Republic will endure until the day Congress discovers it can bribe the public with the public's own money.
- Alexis de Toqueville, 1835