MTRHM5
It sounds like you got the Surge Guard after the fact and now things are going to happen. Unless you had the Surge Guard from day one and always had it on line when every you were connected to shore power, your going to have a hard time explaining that to Winnebago.
If you did in fact get hit with a voltage spike, look for other equipment to fail. The electronics in our coaches are not designed, nor will they take spikes or brown outs.
Over the past 3 years I've been trying to keep a topic at the top of these forums about "NEVER CONNECTING TO ANY SHORE POWER WITHOUT A SURGE PROTECTION DEVICE IN/ON LINE".
Our lives would be a lot simpliar if RVIA would mandate that all RVs be equiped with wholehouse Surge Protection.
Tomcat F15