Buzzy sound on vintage EST96a

[Geek99]

I have this active bass and I got it out of storage on Friday. I replaced the battery. I put it straight to amp through two or three different cables and it buzzes on all strings when played - worse on lower strings 

 

does the same if sent straight to a zoom b2.1u and headphones 

 

Is the preamp burned out somehow, I’m wondering, and what would I replace it with ?

Edited August 6, 2021 by Geek99

[Geek99]

Addendum - when played acoustically is very clear so not a badly cut nut, poor string winding on peg, high fret etc 

[MoonBassAlpha]

18 hours ago, Geek99 said:

I have this active bass and I got it out of storage on Friday. I replaced the battery. I put it straight to amp through two or three different cables and it buzzes on all strings when played - worse on lower strings 

 

does the same if sent straight to a zoom b2.1u and headphones 

 

Is the preamp burned out somehow, I’m wondering, and what would I replace it with ?

Sounds like a grounding issue 

[Geek99]

7 minutes ago, MoonBassAlpha said:

Sounds like a grounding issue 

You mean inside the bass ? I’ve tried two different cables 

[MoonBassAlpha]

10 minutes ago, Geek99 said:

You mean inside the bass ? I’ve tried two different cables 

Yeah,  could be a wire off grounding the bridge or the socket,  or pickup.

[Geek99]

Possibly - it’s been sitting in a gig bag in the cupboard so it’s not like it’s had trauma 

 

I’ll open it up tonight and have a look plugged in so I’ll know if it clears

[Geek99]

Nothing obvious 

[MoonBassAlpha]

One of the capacitors on the preamp is wonky, is it still attached?

[Geek99]

It’s stopped mysteriously - unsure why 

[Geek99]

Possibly you’re right / rummaging around for those photos knocked something back into place