I use a marshall code25, which I have bought recently for home playing. The problem is , when the guitar is plugged in and the amp switched on I get a lot of buzzing noise. No noise when played.
I have checked the grounding and cables everything, but the noise does not seem to go away
can someone help with some troubleshooting?
I have the same issue. Try grounding your amp. It solved my problem. What I did I bought a two prong adapter with a ground pin connector provision for the three prong plug. I connected a long wire to the GROUND PIN connector and connected the wire to an exposed rebar of the house to ground the amp. The grounding issue solved and also the hum is gone. I hope this helps.