[R-390] R-390 AGC/ Time constant

[Pete Williams]

  G'day...when does a capacitor  become a battery?
In trying to sort an obscure fault in a R-390/URR agc /TC problem in a IF
module, I've discovered that the 2 mfd TC capacitor appears to be generating
a 20+ mV charge that won't go away.
It's  still there  after standing still for  hours and not  affected after
shorting--- the charge returns.
Anyone else seen this?-Other 2 mfd caps don't show this effect.
Changing to see if the problem in the radio is still there yet to be done.

Comments please ?
Pete VK3IZ.