[R-390] R-390A - AGC troubleshooting procedure, C. Steinmetz

[Larry H]

A common problem with R-390A's is the AGC system can malfunction. This can
be caused by many different problems and can sometimes be difficult to fix.
To aid in diagnosing these problems, Charles Steinmetz wrote a terrific
procedure many years ago and has updated it a few times since then, with
the last one on 2/17/20.  Because his procedure is so beneficial, I thought
it was important to make it easy to find.  It is in our 'Pearls' (in
the 'IF Deck' section) and the R-390 List forum archives, but I think it
would be much easier to find on our website ('Reference' page in the bottom
of the 'Tutorials' section). Here's a direct link to it:

R390A AGC Diagnosing, Steinmetz (r-390a.net)
<https://www.r-390a.net/R390A%20AGC%20diag%20Steinmetz%20LH.pdf>

Regards, Larry