my amp (peavey stereo chorus 400) is having some problems like it cuts out sometimes and i was wondering if it would be better to either pay to fix it or
should i just sell it and go out and get a new amp? or any advise onto why it could be doing this.

The Symptoms are: it sometimes cuts out or it makes fuzzy sounds and sometimes one of the speakers cuts out and the other plays still or it just gets really low for a second or two and then becomes loud again

any help is appreciated
Gibson Explorer, Wine red Natural finish
Hughes and Kettner Vortex Black series, Half stack
Peavey Stereo Chorus 400
Electro-Harmonix Metal Muff