I recently picked up a nice L4B with power supply, SN 1934. The tube
marking was pretty faded, but are Eimac 3-500Zs, date code 7115. the
amp and PS are real clean and look physically pretty good. I have
removed the two filter cap/ diodes boards from the PS. I think the
Sprauge caps are original. They all reformed nicely and are showing
less that 1 ma current at 450 volts. I will likely change out the
diodes for some 3A 1KV diodes and button things up. Are there any other
caveats, or issues that I should be looking for before I put this thing
on line. General comments on the L4B are welcomed. I will be using the
amp with my Drake B line twins.
73
Jim Zellmer
KA0VSL
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