Another Hot Rod Deluxe Oscillation distortion

[Magiamusical]

This Fender Hot Rod Deluxe exhibits on both channels an oscillating noise when a chord is played. I checked R78 & 79 and they measure ok, tested the...

[Granth]

I've got a Hot Rod Deluxe that has recently started playing up. When the clean channel is all the way off, the guitar can still be heard, albeit at low volume,...