bluedoughboy Posted February 12, 2013 Share Posted February 12, 2013 I use a gallien Krueger 700rbii, had my first problem with it setting up for a gig on the weekend. I had seriously low volume-we checked all the settings and the main volume had some serious squelch going on, managed to get the knob (amid some loud crackle) at a point that gave me full volume and got me through the gig. Plugged it in today and I've got low volume and the squelch rapidly disapeared. Is it likely that it is just a dirty pot? It sounds perfect, just at a fraction of its usual volume, would that be the case if it was just a pot? Quote Link to comment Share on other sites More sharing options...
Mr. Foxen Posted February 12, 2013 Share Posted February 12, 2013 Dirty pot, or a leg of the put pulling free of the pcb and being resistive. Does it feel loose? Quote Link to comment Share on other sites More sharing options...
bluedoughboy Posted February 12, 2013 Author Share Posted February 12, 2013 It feels normal. After I posted I was playing & the amp kicked in to full belt without warning while nothing was being touched. Quote Link to comment Share on other sites More sharing options...
bluedoughboy Posted February 12, 2013 Author Share Posted February 12, 2013 It feels normal. After I posted I was playing & the amp kicked in to full belt without warning while nothing was being touched. I'm officially clueless. Quote Link to comment Share on other sites More sharing options...
Mr. Foxen Posted February 12, 2013 Share Posted February 12, 2013 Sounds like dry joint then. Sound vibrates it enough to make contact sometimes. Quote Link to comment Share on other sites More sharing options...
bluedoughboy Posted February 12, 2013 Author Share Posted February 12, 2013 How do I fix that sir? Quote Link to comment Share on other sites More sharing options...
The fasting showman Posted February 12, 2013 Share Posted February 12, 2013 The suggestion above sounds good, also try a jumper lead between send and return in the effects loop; sorted out similar sounding shenanigans in my old GK400RB due to a corroded switching jack. Not saying it's the reason but trying it will cost nothing. Good luck. Quote Link to comment Share on other sites More sharing options...
Mr. Foxen Posted February 12, 2013 Share Posted February 12, 2013 [quote name='bluedoughboy' timestamp='1360702007' post='1975132'] How do I fix that sir? [/quote] Soldering the broken join. Quote Link to comment Share on other sites More sharing options...
Subthumper Posted February 12, 2013 Share Posted February 12, 2013 Or it could be a broken pot. If the amps had a whack on the front panel its possible the shaft of the pot has pushed the wiper through the track. Best pop it out and check it. Tech job if you dont know what your doing. Its got to come to bits anyway even to resolder it so it may as well be done while its apart. Also take the opportunity to check over all the other solder joints especially the ones on pots. Good luck cheers Just Quote Link to comment Share on other sites More sharing options...
bluedoughboy Posted February 12, 2013 Author Share Posted February 12, 2013 Thank you both. I think I'll get someone else to do it; its not worth the risk of cocking it up! Quote Link to comment Share on other sites More sharing options...
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