Trying to figure out a problem with my fender custom vibrolux reverb amp. When I turn up the Intensity on the vibrato I just get this loud chirping static sound in place of what should be the vibrato swells. Also, when i turn the amp up past 3-4 I get this same sound when hitting a loud note. If anyone can help I'd greatly appreciate it.
I thought it my be a cap I replaced recently but I checked it and its still good. Also checked the 12at7 tube the reverb uses.
Any suggestions on what I should check next?
Thanks!