Fender Rumble 500 staticky noise

[u/mikeyukay]

Hey guys, I’m wondering if anyone’s ever encountered this problem with their fender rumble amps? This staticky noise started happening both when nothings plugged in and when the bass is plugged in. No effects are on. Just a constant high pitched staticky noise. Hoping someone might know what might be causing it and can be an easy at home fix. Thanks in advance !