[R-390] R-390 Digest, Vol 98, Issue 2

[Jim Green]

Thanks Chuck.

I have checked all 2.2K resistors and found 1 out of spec. (2.53K). I  
replaced it. I also replaced C327 with a 100pF 1KV ceramic. Much  
smaller (Physically) than the original. Also, I hope I got the correct  
cap. It went from T-207 to ground. I'll go back and check the  
schematic before I proceed.

This radio is very clean inside. It looks just like brand new. No sign  
of rodent technicians of arachnid boatanchorous americonis.

Each soldered connection has a drop if varnish on it. Not a total slap- 
flap coating.

I have found a potential gear lube. I have used it with success in the  
repair of watches and other fine mechanisms.  I pick it up at my local  
health food store. It's Jojoba oil. Very slick and tenacious at  
clinging to the gear teeth and bearing surfaces. Oh, and it's non- 
toxic. I lubed my R-390/URR with it about 5 years ago. I can still  
spin the Kc knob with one finger. I got this tip from an old watch  
repairman I know. He said you can buy it in miniscule quantities from  
watchmaker suppliers for big bucks or from the health food store 8oz  
for $9.00.

I'm going slow on this project. a little bit each evening. Gives me  
time to think before I do something dumb.

Jim