[PA Engineer]

Maybe not. The blocking diode may be fried. It may be degraded, not totally fried. Again, we simply don’t know. what will be more vulnerable is the inverter/chargers

Agreed. The diodes are cheap and replacements are easy to keep on hand and install. The inverter/charge (particularly the FETS) is the week link. I replaced my modified with a true sine wave. The modified is now in storage as a replacement.

I would add a butane solder sucker and iron to the back up preps.

[amorphous]

My combo microwave/oven broke (the microwave part) and instead of buying a new unit $2,600 - the one I have is 17 years old - I decided to repair it. I needed a new diode (along with some relays and a capacitor). The diode I priced at the local appliance repair parts store was $45 for a single diode. I found five of them on Ebay for $6 and the price included shipping. I could have gotten the same deal from China (if I could have waited on shipping) for half that. So I now have 4 extra high wattage diodes in reserve. :-)