[ARC5] Reviving squealing "command" receivers (re-capping)

[Leslie Smith]

Hello List-members,

I have a number of "command" (ARC-5) receivers running from 60V B+ line.

When bought about 1/2 the sets were working.  The rest were repaired. 
After repairing each set it was found to work according to expectation.

Generally I have noticed several sets (eg R-23, R-24) now squeal.  I have never re-capped these sets, and suspect (from what I have read) that I must re-cap all the sets.  I run the sets from a 60V B+ line, and capacitor leakage does not seem a problem at this voltage.  I have the AN 16-30 ARC-5 manual; I know the location of the circuit diagram and under chassis component layout photographs.
 

I would like to hear from other members on the list about 
(1) which caps are "sus" and need to be replaced
(2) which caps are un-likely to give trouble
(3) the pros and cons of re-stuffing the "flower-pots".
(4) a web-page that describes how to re-stuff a "flower-pot".

Thanks,

Les
ex vk2BCU









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