I've got one of the older ones here to repair. The idiots who made it POP RIVETED a pair of 25-amp button rectifiers against an unplated aluminum flat plate heat sink.
All the chargers are like this now. Like letting a ten year old prepare a martini. Disaster is certain.
I am going to use a pair of TO247 Schottky rectifiers sealed to the plate and install a small fan. And a timer and voltage gauge.
At one time, these were OK chargers. The manual ones. Their transformers were extremely stout, the weakest point on the originals was the switches then the rectifiers.
Well at least there still are Megawatts and Meanwells.
