[R-390] sp-600-jx-17

Mon, 7 Jan 2002 21:27:38 EST

In a message dated 01/07/02 7:48:55 PM, [email protected] writes:

<< Recently purchased this unit and seems to be drifting. I do not leave it on
24/7. How long should it take to stabilize from off? Any particular tubes
that may need looking at?
Tim
k1syn >>

Try replacing the OA2 voltage regulator tube, a weak one will cause drift. 
Also, look at the bottom of the power supply transformer, if your voltage is 
over 117 volts, I would suggest moving it to the 139 volt tap.

Les Locklear