Members planet shh Posted June 13, 2007 Members Share Posted June 13, 2007 Not actually mine, but a friends. Anyway-Had the head for less than a year now.Taken great care, play it about 2x a week. Playing at band practice and all of a sudden amps volume cut.Now it's just really quiet, can't get it loud anymore. He bought it new and hasn't had it serviced since he bought it. So I was thinking maybe it was biased too hot and he just blew a tube? Anyone have any advice to try and diagnose the problem other than just bringing it to a tech? Link to comment Share on other sites More sharing options...
Members blackba Posted June 13, 2007 Members Share Posted June 13, 2007 Check the usually first: 1. Cables2. Guitar3. Speaker4. Fuses5. Power amp tubes (are they glowing?) Swap them out6. Preamp tubes. Other than that take the amp apart and look for loose connections. Do some basic trouble shooting, the first 3 steps are just confirming that it is the amp and not something else. Link to comment Share on other sites More sharing options...
Members planet shh Posted June 13, 2007 Author Members Share Posted June 13, 2007 were sure its the ampbump Link to comment Share on other sites More sharing options...
Members this is paul Posted June 13, 2007 Members Share Posted June 13, 2007 well im pretty sure its self biasing so grab a matched set of power tubes. But first i would grab one preamp tube and swap it in and out of the old ones to see if thats it. Just realize that the tubes are hot as hell to the touch Link to comment Share on other sites More sharing options...
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