Thanks all.
I took the charging unit out and put on a bench to make testing easier.
Found a questionable solder joint which I re-soldered.
Applied battery power to the +- terminals, still 2.3 amps.
No components burnt or any other visual indications.
Current battery is a single marine deep discharge, powering lights, roof fan and a heater fan.
Someday trailer will have a lithium in its place, maybe 2.
Checking prices it looks like replacing the entire distribution panel with charger is just a few dollars more than the charger alone.
I guess I will change the whole thing out for a Progressive Dynamics Mighty Mini 60 Amp PD4060K unless there is a better option you might recommend.
