Randall RG100es Frequency Oscillation Problem Howling Noise Troubleshoot Help

[aczfenderstrats]

Hello all,

I have a vintage Randall RG100es that has some issues. The main problem is that the amp will start to produce a loud frequency oscillation...

[ricothetroll]

Hi,

A friend of mine gave me this Fender Hot Rod Deluxe to be repaired.

Here's the schematic and layout :
http://support....

[dirtrocking]

hi , ive been getting this high pitched squeal in my krankenstein when ever i start turning up master 2, gain or the sweep knobs, i have tried changing the...

[fretburner28]

My AVT 150H is losing gain in the OD1 and OD2 channels. Sometimes when I turn it on and switch to an OD channel there is just not as much gain as there usually...