Members KeysBear Posted February 5, 2007 Members Share Posted February 5, 2007 A few months back I bought an SX Jazz bass and put it aside while I was into other projects. Yesterday I plugged it in to play and found out it has a loud hum pretty much across all frequencies. No, it' not the instrument cable or amp since everything sounds fine with my Yamaha bass and another guitar. Yeah, I know you get what you pay for but has anyone else had a hum problem with these basses and is there anything I should check or replace first? I did a search on the problem and found a zillion threads that talk about SX, bass, and hum, but so far nothing addresses the problem. Thanks Link to comment Share on other sites More sharing options...
Members PaulyWally Posted February 5, 2007 Members Share Posted February 5, 2007 Single coil pickups... they hum... get used to it. However... the PUPs in SX's are going to naturally pick up more interference. Their crappy pots/electrical might pick up some interference too. My main question is, how much hum do you get when you have both PUP's turned all the way up? Unless there are outside factors (your house's electrical... power lines... cell sites... radio towers) a jazz bass shouldn't really hum much (if any at all) with both PUPs turned up. Link to comment Share on other sites More sharing options...
Members Fran da Man Posted February 5, 2007 Members Share Posted February 5, 2007 If the hum doesn't diminish with both volumes all the way up, you may have a grounding problem. First place to check for that is in the control cavity to see if wires are intact and connected, then check underneath the bridge.I can't say for sure if SX does this but on a Fender theres a ground wire that just gets "mashed" inbetween the body and the underside of the bridge. This can lose contact by being mashed/pressed too deep into the wood; the fix for it (if the wire has a good connection in the control cavity) is to just move the wire over so it rests on a fresh part of the body. You'll have to do the mashing by screwing the bridge back down. Link to comment Share on other sites More sharing options...
Members The Real MC Posted February 5, 2007 Members Share Posted February 5, 2007 Teach it the words if it hums Link to comment Share on other sites More sharing options...
Members slapthefunkyfour Posted February 5, 2007 Members Share Posted February 5, 2007 If the hum doesn't diminish with both volumes all the way up, you may have a grounding problem. First place to check for that is in the control cavity to see if wires are intact and connected, then check underneath the bridge.I can't say for sure if SX does this but on a Fender theres a ground wire that just gets "mashed" inbetween the body and the underside of the bridge. This can lose contact by being mashed/pressed too deep into the wood; the fix for it (if the wire has a good connection in the control cavity) is to just move the wire over so it rests on a fresh part of the body. You'll have to do the mashing by screwing the bridge back down. Very good suggestion. You stole my post though..... Link to comment Share on other sites More sharing options...
Members Fran da Man Posted February 5, 2007 Members Share Posted February 5, 2007 Very good suggestion. You stole my post though..... I'll return it when i'm done with it. Link to comment Share on other sites More sharing options...
Members KeysBear Posted February 10, 2007 Author Members Share Posted February 10, 2007 I'm going to print out this page and see what I can do with it today. The pups do hum quite a bit with both all the way up. It's so bad I'm sure it's a ground problem. I'll check back with results. Thanks Link to comment Share on other sites More sharing options...
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