WonderHorse Posted March 8, 2010 Share Posted March 8, 2010 This is strating to annoy me quite a bit now - it seems to happen with all the amps I use. Bass: Fender MIA '75 Reissue Basically whenever I'm not playing or not muting the strings there's always a buxxing/humming coming from the amp. If I turn off all the knobs then it goes. Could this pe aproblem with some of the connections on the bass or could it be a problem with my leads? PS. I have about as much electrical and soldering knowledge as a banana. Any help appreciated Quote Link to comment Share on other sites More sharing options...
tredders Posted March 8, 2010 Share Posted March 8, 2010 I had exactly the same issue with my CIJ '75 Reissue Jazz. In the end, I got it screened inside the control cavity and the hum went away. Quote Link to comment Share on other sites More sharing options...
WonderHorse Posted March 8, 2010 Author Share Posted March 8, 2010 I got it screened inside the control cavity What's that mean? Quote Link to comment Share on other sites More sharing options...
CHRISDABASS Posted March 8, 2010 Share Posted March 8, 2010 [quote name='WonderHorse' post='767750' date='Mar 8 2010, 11:39 AM']I got it screened inside the control cavity What's that mean?[/quote] Check this out [url="http://www.audereaudio.com/FAQ_PUNoise.htm"]http://www.audereaudio.com/FAQ_PUNoise.htm[/url] I personally think that this sort of thing should be done in the factory as standard on expensive basses like yours! Quote Link to comment Share on other sites More sharing options...
WonderHorse Posted March 8, 2010 Author Share Posted March 8, 2010 Still none the wiser after reading that article since the article was written for people who already have a knowledge of this sort of thing. Would I be able to get this shielding done at a shop or when I get my bass set up soon? Quote Link to comment Share on other sites More sharing options...
Grand Wazoo Posted March 8, 2010 Share Posted March 8, 2010 [quote name='WonderHorse' post='767796' date='Mar 8 2010, 12:18 PM']Still none the wiser after reading that article since the article was written for people who already have a knowledge of this sort of thing. Would I be able to get this shielding done at a shop or when I get my bass set up soon?[/quote] In simple words you need to isolate the pickup cavities with some copper foil. Also the article suggests applying the same copper coating to the inside of the pickup covers., if this is still "distant" to you then your best bet is to get a luthier to do it for you. You can do without all this if you get specially designed noiseless pickups, usually stacked humbucker in a single coil shape. Quote Link to comment Share on other sites More sharing options...
27 frets Posted March 8, 2010 Share Posted March 8, 2010 [quote name='WonderHorse' post='767796' date='Mar 8 2010, 12:18 PM']Still none the wiser after reading that article since the article was written for people who already have a knowledge of this sort of thing. Would I be able to get this shielding done at a shop or when I get my bass set up soon?[/quote] Allparts/Axesrus sell the shielding material: [url="http://www.axesrus.com/axeElectronicsWire.htm"]http://www.axesrus.com/axeElectronicsWire.htm[/url] A shop/luthier should be able to do it though Also might be worth checking that the earth connection from the jack plug is properly connected to the bridge/strings - a wire should be routed from the control cavity to the bridge, then the wire makes contact under the bridge At a basi c level check that the connections on your lead and guitar are the right way tround - earth being anything you can touch, e.g the shield of the jack plug (not the tip) the outside of the jack socket and potentiometers, internal screening, bridge etc. If you get a multimeter and plug in a jack lead, there should be a 0 ohm conection to anything that should be earthed on the bass from the SLEEVE of the other jack plug, and a higher resistance for the connection to the TIP of the plug (with the volume turned up), if it's 0 ohms to the tip, one of the connections is probably the wrong way round. Quote Link to comment Share on other sites More sharing options...
WonderHorse Posted March 8, 2010 Author Share Posted March 8, 2010 I appreciate all the help but everything that has been said so far means nothing to me. To the shop it is. Quote Link to comment Share on other sites More sharing options...
Geek99 Posted March 9, 2010 Share Posted March 9, 2010 [quote name='CHRISDABASS' post='767787' date='Mar 8 2010, 12:11 PM']Check this out [url="http://www.audereaudio.com/FAQ_PUNoise.htm"]http://www.audereaudio.com/FAQ_PUNoise.htm[/url] I personally think that this sort of thing should be done in the factory as standard on expensive basses like yours! [/quote] Interestong link - see the guy in it shielding the pickup covers ? Is there any part of the pickup that the foil should not touch ? Quote Link to comment Share on other sites More sharing options...
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