Super Reverb - Reverb Noise Oscillation Help

[sabzor]

See Video:

I have found that swapping the new RCA cable to the old 60s one seems to quite things down considerably but I'm not sure it completely fixes the issue. Is there a difference between them?

[Enzo]

First, is your mains power plug complete with grounding prong?

Does the reverb work normally? Make sure the cords are in correct. You are using red and white plugs so they are easy to tell apart. Turn on the amp, unplug the cords from the reverb pan. Turn up the reverb half way. The cords are still plugged into the chassis jacks. Now touch the tip of each on on the free end. One of them should hum loudly when touched. Make sure that one plugs into the OUTPUT jack on the reverb pan. The other of course into the INPUT jack. And I guess, before connecting the pan, make sure the jacks on the pan are clean and shiny.

Offhand, it sounds to me like you have oscillation through the reverb return, quit possibly due to poor shielding connections.

Also, since the Fender connects the reverb switch directly to the signal path, the footswitch is suspect. So does the amp still do this with the footswitch completely disconnected from the chassis? In your video you seemed to have to push both buttons to kill the reverb, so is the FS internally wired correct - does the switch marked reverb actually control the reverb by itself?

[sabzor]

I normally use it without the footswitch, I just plugged it in so I could show that if I 'shut off' the reverb it goes away.

It's not just noise its that it does that weird grounding thing when I touch stuff when the reverb is engaged.

Amp has a 3 prong plug for the mains.

The reverb itself works normally when engaged, when i turn it up the reverb level increases in the mix as per normal but there is noise and grounding issues that come with it. If the tank is completely unplugged from the amp the issues still exist unless the reverb is 'shut off' via footswitch.

[TigerAmps]

HI - Is this a true 60's Black Face amp? Has it been re-capped?
I have a '64 that howled for a while. Causes - old weak caps, a bad tube (did you try swapping the the tube out?).
If it stops with the foot switch, it sort of isolated down to the 12AT7 or 12AX7 (reverb send and return) although the foot switch grounds the input to the 12AX7 - the return).

If you pull the 12AT7 driver, does it make a difference?