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#1
02-08-2017, 06:06 PM
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Amp volume pot problem
Just got an old Ampeg G18 guitar combo amp and noticed that the volume pot cuts in and out. I took it apart and sprayed all the pots with pot cleaner but I can only get sound if I push in on the volume pot. It then sounds great but eventually cuts out again. Do I have to replace the pot, or try spraying it again? This little amp has some mojo for a transistor amp--
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___________________________________________ 1933 Gibson L-00 2007 Taylor 110 2013 Taylor GS Mini 2018 Eastman E10M 1977 Sigma DR-9 2012 Republic Miniolian 2016 Recording King ROS-G9M 
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#2
02-08-2017, 06:52 PM
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Replace the pot. The failure rate and lifetime of pots is surprisingly high and short, respectively.
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jf45ir Free DIY Acoustic Guitar IR Generator .wav file, 30 seconds, pickup left, mic right, open position strumming best...send to direct email below I'll send you 100/0, 75/25, 50/50 & 0/100 IR/Bypass IRs IR Demo, read the description too: https://youtu.be/SELEE4yugjE My duo's website and my email... [email protected] Jon Fields
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#3
02-08-2017, 07:25 PM
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Another possibility, especially if this is a modern production amp and its pots are mounted to a circuit board via their terminals, is a broken solder joint or terminal tab. If you can solder, you can try to reattach an unattached terminal. If the leg is broken you can replace the whole pot.
Bob
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#4
02-09-2017, 09:36 AM
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Pretty sure the pot is attached to the circuit board, I will inspect and try to solder it back. Is it safe to unplug the amp and just start soldering? Would it help to replace the speaker or is the cheap speaker part of the mojo? It has a 7 1/2 " paper cone.
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___________________________________________ 1933 Gibson L-00 2007 Taylor 110 2013 Taylor GS Mini 2018 Eastman E10M 1977 Sigma DR-9 2012 Republic Miniolian 2016 Recording King ROS-G9M Last edited by Hurricane Bob; 02-09-2017 at 10:13 AM.
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#5
02-09-2017, 11:34 AM
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a tube amp ,, no, gotta be carefull.. a SS amp,, should be safe once unplugged.
re-soldering might help if there's a dodgy solder joint, but at the end of the day, might be time to replace it. What is the stock speaker? You can always replace the speaker AFTER you've got this issue resolved. That's a five minute task...
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#6
02-09-2017, 12:21 PM
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Its a solid state 10 watt amp--three pots are all soldered into the circuit board. Maybe remove the outside pots nuts and the circuit board will come out? Super cheapo speaker thats for sure. Got no sound now--
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___________________________________________ 1933 Gibson L-00 2007 Taylor 110 2013 Taylor GS Mini 2018 Eastman E10M 1977 Sigma DR-9 2012 Republic Miniolian 2016 Recording King ROS-G9M
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