I own a Marshall jcm 900 head and a Marshall cab w/ 4 75watt celestions. My question is: after I let my amp warm up on standby mode for a couple of minutes I start playing some warmup scales and after about a minute a click happens and then a buzz which stays on for the rest of the time I am playing. Is this my tubes? my cab? my guitar? my cords?
I think it's my tubes but I'm not quite sure. Has anyone had this problem or know what the heck is going on it would help me out greatly. Tanks P Walnuts (ouch)