Joerivv Posted October 8, 2017 Share Posted October 8, 2017 I have a mystang pj bass with a strange problem. It starts to hum with the volume pot all the way down! The grounding on the bass is ok. What could cause this issue? Quote Link to comment Share on other sites More sharing options...
MoonBassAlpha Posted October 9, 2017 Share Posted October 9, 2017 One of the tags on the volume pot isn't connected to ground properly? May be a dry solder joint if it is bent back and soldered on to the pot body. Quote Link to comment Share on other sites More sharing options...
dannybuoy Posted October 9, 2017 Share Posted October 9, 2017 [quote name='Joerivv' timestamp='1507506346' post='3385978'] The grounding on the bass is ok. [/quote] Sounds like it might not be ok. Can you test with a multimeter to make sure all the ground points are connected from the jack to the pots and bridge? Quote Link to comment Share on other sites More sharing options...
Joerivv Posted October 9, 2017 Author Share Posted October 9, 2017 On the pj mustang just like a jazz there is no ground connected to the jack because the controleplate connects everything.there are only grounds to the back of the volumepot. Quote Link to comment Share on other sites More sharing options...
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