[R-390] R-390 Problem

[Gary Harmon]

My Collins R-390 (non A) has a strange problem.  If the line voltage drop
below 120 volts, the signal goes away but audio rush remains.  Kick the line
voltage back up to 121 and the signals return.  The 180 volts does not
change in either situation.  All tubes in the power supply and audio modules
have been replaced with tested tubes.  Additionally, when you turn on the
radio from a cold start, it take about a minute for the signals to apprear.

Thoughts anyone?

Vr,

-- 
K5JWK
Gary Harmon
6003 Archwood
San Antonio, TX 78239-1504
210-657-1549 home
210-884-6926 cell