Hey guys. Sometimes when i open my amp the amp produces a whistling noise. I haven't had a chance to troubleshoot because it only happens sometimes. Why is this happening and should I worry? I have a Epiphone Studio 15r and a Epiphone Les Paul Jr. The whistling noise only happens maybe 1/10 times. I don't use any pedals but while the amp is off i always leave it on distortion. Thanks in advance !
Don't double post.
What do you mean by "open" your amp??
Thought of feedback??? If anything else check your guitar inputs.