[jpdylon]

I restored this for a customer...who really just doesn't know what he has

The B600:

Start to finish it took 4 months. The entire chassis was re-capped, and I had to troubleshoot a variety of nasty little gremlins. A solid state 50A1 replaced the dead ballast tube. The SS replacement was a hand made thing that consists mainly of a regulator which keeps a constant 50ma of current going for the radio --probably better so than its original counterpart.

The original filter can was shorted (which destroyed the 50A1 ballast) so I had to mount terminal strips with a custom cap assembly. There is no room underneath the chassis for anything.
The selenium rectifier was replaced with a 1n4007 and a 47 ohm dropping resistor.

I also bypassed the AC/DC selector switches. The contacts were so badly worn, even the deoxit and repeated re-surfacing didn't make them right. The tuning cap was especially grimy and stuck in places due to lubricants that had long turned to gel.

I spent a good hour completely aligning the RF and IF after the recap and sorting out other problems. The amount of steps you have to perform and repeat is mind numbing.

Cosmetically the set was a good shape when it arrived, but it looks like new after some cleaning. This is one of the nicest examples I've ever come across or had the pleasure of repairing. Hopefully the owner will enjoy it and not decide to flip it on ebay.

Enjoy!