marco3253 Posted March 16, 2017 Share Posted March 16, 2017 Hi guys, yesterday i was playing at home, in low volume mode.While i was writing an sms on my iPhone, the volume knob of the guitar was turned down, i started to hear a hum noise from the amp (like a power hum) for like 6 seconds or so, then a pop sound (not so loud honestly)then, no sound came out no more from the amp.I tried to turn it off and on again, tubes seems to be as always (as i can see) on and lighted, don't see any difference in luminance between them...Anyway the amp turns on normally, i can change all the parameters, class, triode, voicing, everything seems to be normal except the sound that is not coming out.I bought it used 4 months ago and these tubes are on for a year i guess, could this be a problem caused by old/died tube/s ?I have a pair of new tubes same model, but don't have a multimeter to check the bias voltage...but before changing the tubes i would like to calm down and assume that old tubes can cause this kind of problem.What do you guys think?Thank you. Quote Link to comment Share on other sites More sharing options...
marco3253 Posted March 16, 2017 Author Share Posted March 16, 2017 Changed tubes, cannot bias because it showed me 1 on the tester... So i saw that also the tube protection fuse was died, changed it, biased. Works Very happy 😜😜👋ðŸ»ðŸ˜˜ Quote Link to comment Share on other sites More sharing options...
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