Sounds like the jack on the inside is bent or broken. If you have no soldering skills take it to a shop for them to replace the jack. If you know your ABC's about soldering then get a new jack and put it in.
your bass has a barrel jack, in which case you can't do anything but replace it. This would be a good time to think about modifying the instrument, so that you can use a decent 3 buck Switchcraft jack; when I replaced the jack in my Cirrus, I went with an electrosocket.
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Instrument repair/setup, Bay area
Barrel jacks stink. Mod it out to a Switchcraft old school jack like JLS suggests. Or put a new barrel jack in and replace it again within 5 years, maybe less. They are kind of like a timing belt on the car; change it on a schedule or it will fail when you least can afford it to.
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*1962 Jazz. '74ish Ampeg V4B, 115/210. * '75 Gibson G3. *Epi Tbird. *Squier: VM Jazz, CV 50's P. *Squier VM Jazz Assoc. *MBC 641. Squier owners club
Not as easy as saying it. Take a look at the Thumb and consider what would be involved in your suggestion.
OP: buy another barrel jack.
I was supporting JLS's suggestion he suggested an Electrosocket too. So yes you'd have to have the hole enlarged: any good luthier or woodworker can do it easily. A worthwhile mod for a nearly bulletproof result. It was only an alternative and a valid one at that. JLS is not a neophyte in the bass repair world or TB; his advice is never random.
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*1962 Jazz. '74ish Ampeg V4B, 115/210. * '75 Gibson G3. *Epi Tbird. *Squier: VM Jazz, CV 50's P. *Squier VM Jazz Assoc. *MBC 641. Squier owners club
Take a look at the Thumb and consider what would be involved in your suggestion.
