I'm wondering if many of the failures in electronically controlled equipment are due to power surges etc. It may be worth having a whole-home (or equipment specific) surge protective device installed, which will protect the power electronics (which have very minimal surge protection built in) from anything else happening on the line (particularly if there are storms where you live often)
Whole house surge protectors are now mandated in some country’s codes already. It’s a good idea, I’m looking at installing one here myself just because I have some expensive electronics.
