[sdiy] Freebass 383 ROM anyone?

Sean Ellis tensiontype at hotmail.com
Wed Apr 13 01:31:15 CEST 2016


I picked up 4 of these in one auction all listed as for repair. Turned out every one had catastrophic pot failure that cut out the signal. I would change all the pots if you have a version with the black plastic pots, I think one of these even had standard 16mm pots that had failed.

> Date: Tue, 12 Apr 2016 19:58:43 +0100
> From: gordonjcp at gjcp.net
> To: synth-diy at dropmix.xs4all.nl
> Subject: Re: [sdiy] Freebass 383 ROM anyone?
> 
> On Mon, Apr 11, 2016 at 09:23:28PM +0000, Ullrich Peter wrote:
> > Hi Gordon!
> > 
> > As the Freebass 383 is said to be the same as the MB33 this eprom image should work:
> > 
> > http://www.mediafire.com/download/u4kkx9659e9tk6r/Freebass_MB33_OS_27C256.BIN
> > 
> > Ciao
> > Peter
> 
> Well, I burned a ROM and stuck it in, and it hasn't made a big difference.  It does at least trigger the envelope when I power it on now.
> 
> I guess the next thing to do is try and devise some sort of diagnostic ROM.
> 
> -- 
> Gordonjcp MM0YEQ
> 
> 
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