Can capacitors in guitar amplifiers dry out?
The capacitors inside a guitar amplifier can dry out and are especially likely to do so if the amplifier is not used for a long period of time. A low, continuous hum coming from the amplifier is a sign that the capacitors may be dry, as is the presence of false tones.References:”The Complete Guide to Guitar AMP Maintenance”; Ritchie Fliegler; 1994EFY Enterprises Pvt.