verhoevenc Posted April 17, 2009 Report Share Posted April 17, 2009 So, I was just jammin' out on my 100w JCM900 half stack and the volume suddenly cut down to like half of what it was... then I smelt something like burning. I smelt the head and it's definitely coming from there and well as the left 2 tubes glowing a much brighter orange than the rest. My GUESS is that two of my tubes are just burnt out from use... but I figured I'd ask. Chris Quote Link to comment Share on other sites More sharing options...
westhemann Posted April 18, 2009 Report Share Posted April 18, 2009 Dude...bad news... Take it in for a checkup...JCM900 is an expensive amp to risk... Quote Link to comment Share on other sites More sharing options...
dpm99 Posted April 18, 2009 Report Share Posted April 18, 2009 Psht! The greatest innovations in guitar history came from things breaking. This could be your opportunity to start a musical revolution! Or a fire. -Dave Quote Link to comment Share on other sites More sharing options...
Paul Marossy Posted April 18, 2009 Report Share Posted April 18, 2009 It could be any number of things causing that. Check out this page here: http://www.geofex.com/ampdbug/smoke.htm Basically any burning smells and/or smoking coupled with a reduction in power in a tube amp means that something got really overheated and possibly damaged. You really should take it to someone competent that knows how to work on tube amps and have them check it out. Quote Link to comment Share on other sites More sharing options...
j. pierce Posted April 19, 2009 Report Share Posted April 19, 2009 Amps work on magic smoke. You let the smoke out, they stop working. I haven't found a reliable way to shove it back in there, though. (Sorry, nothing of value to add that hasn't been said.) Quote Link to comment Share on other sites More sharing options...
ae3 Posted April 25, 2009 Report Share Posted April 25, 2009 Maybe your awesome playing is ripping apart the amp at it's very core! Take it to a tech, quickly. Quote Link to comment Share on other sites More sharing options...
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