[R-390] Odds are?

[Norman J McSweyn]

Hi all!
Had an intresting experience. I am the proud owner of three blue stripers. These things are REAL GRUNGY!!! 
Picking over the modules, finding the best of the bunch, cleaning them, recapping the bbod's, ect took three months. Friday night one of them came to life. A little monkying with various things and it recieves on all bands. 
This reciever had one little problem. It scared the hell out of me, IT HUMMED!!!! No, not audio 60cps hum, mechanical quiet mrrrrrr, like your kitty cat happy hum. 
Shot the bug to distraction, pulled all cables to subassemblies: still there. Swapped power supply: still there.
Threatened problem with various dangerous tools: still there.
Had a thought last night. Power supply one and power supply two were built by  the same manufacturer. The likelyhood of two bad supplies is astronomicial, except, when I compared them:
They were both Capeharts, with the same contract number, order number and sn's less than 100 units apart. 
The Stewart warner I swapped in is an unhappy cat, it doesn't purr.. However it does light up ok and I am a happy ham. 
These recievers are real mutts. Some 67 eac, SW,  but the real oddball is a collins 54 build audio deck.
A bunch of other bugs remain to be shot, like two dead mechanical filters (4kc and 8kc). agc problem. Normal stuff for a reciever that sat in a field, outside, uncovered for years. 
BTW, where were these blue stripers that had white dust that is not much different than borax. Every time I went to clean this radio up, I sneezed, my nose watered. Leave the room, come back, Everything was ok until I took out my cleaning tools.  
73 for now 
Norm n3ykf