[Amps] AC Hum On CW but Not on SSB

[Carl]

>I have a Henry Amplifier that uses two 3-500Z.  a Model 2K floor
> Mounted.  I get a Lot of Complaints of a Very large "AC type Hum" on CW 
> but not on SSB.  This is confirmed by several different operators in 
> Europe by Switching Modes, and Bands.  Could it be one of My power supply 
> Capacitors in my Power supply is going Bad?  I have eight of them in this 
> AMp.
>
> 73 Bruce N9BX


The caps are most likly as the hum on SSB would only manifest it self on 
peaks.

Carl
KM1H