Joe O'Connor Posted July 4, 2014 Report Share Posted July 4, 2014 Hey guys, So my girlfriend has just in the last two days started to have an issue with her amp head. Even when nothing is plugged into it, so just straight from head to cab, it crackles and hisses in both the clean and lead channel. Me being not overly (At all) knowledgable on guitar stuff, I've researched it a lot on the internet and the main suggestions seem to be to swap out preamps on it to see if they are faulty. So we have bought one and swapped it into each of the three preamps but the problem still exists... We havent tried a new power tube to see if its a problem from that but thankfully they arent overly expensive so if we have to we can. Any suggestions to what is likely to be the cause? Its only been used for a year, semi frequently for gigging and practices, nothing insane. The next step if I cant check anything myself is to take it to a professional to inspect it, but if we can save money then that would be neat... The preamps are 12AX7 and the power tubes are 6L6GC if that is any help at all? Thanks, Joe Quote Link to comment Share on other sites More sharing options...
weirdoku Posted July 4, 2014 Report Share Posted July 4, 2014 (edited) Found this on google. http://peavey.com/forum/viewtopic.php?f=19&t=26793 Does sound like a trip to an amp doctor though. Edited July 4, 2014 by weirdoku Quote Link to comment Share on other sites More sharing options...
JD™ Posted July 4, 2014 Report Share Posted July 4, 2014 Just before you go replacing stuff or sending it off, it's worth getting a can of compressed air and spraying it all out. You'd be surprised how many of these issues are just dust. 1 Quote Link to comment Share on other sites More sharing options...
Joe O'Connor Posted July 6, 2014 Author Report Share Posted July 6, 2014 Found this on google. http://peavey.com/forum/viewtopic.php?f=19&t=26793 Does sound like a trip to an amp doctor though. Yeah I had a read through all of that, that is where I got the preamp idea from. Took it into the amp doctor yesterday though so it will be interesting to see what the cause was. By the sounds of it, it is early on in the head. The gain control on the Lead channel can drop it out so yeah... Just before you go replacing stuff or sending it off, it's worth getting a can of compressed air and spraying it all out. You'd be surprised how many of these issues are just dust. We did give it a decent clean out with cloths and blowing on everything, but didnt go for compressed air. Like I said above, it sounds like an issue caused early on in the head, inside that actual circuit board and there is no way I am sticking my fingers in there! Quote Link to comment Share on other sites More sharing options...
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