#1
it is not the amp, because it works fine with other guitars i have.

so it is the guitar. it is an ibanez les paul model, but i'm unsure of the model as it was given to me by a friend.

it worked for one night, then the second night i plugged it in, after 30 minutes of playing, it made this weird noise. it was like a bass drum, going at 40 bpm.

i don't know what it is, but if anyone has any idea what's happened to the guitar, please tell me and how to fix it.
#5
Check the wiring. Could also have a dirty switch or jack.
Is it active pickups? Or passive? If active, change the battery.
#6
guitar is making weird noise when plugged in.


At my house, it usually means I've gotta start practicing more.
#7
If it hums, perhaps the pickup isn't grounded. If the pickup is grounded, then a wire should connect the pickup to the bridge to cancel out the hum.
About the crackling, on the other hand, check whether there's dirt on any of the potentiometers.