Vintage Synth Repair

>
> I own a Roland Tb303. Analogue Solution make a mod :
>
>     * Lithium battery for at least ten years battery backup, so there is no
> need to install C-cell batteries.
>
> Does anybody know how to make this mod? I will be very happy to know how to
> make this mod... It would be heaven if my Bass Line could save the presets
> when I switch it off...

hi alexandre,
i have a tb303 too. i've had it for awhile, but just started using it recently.
it does save the presets with c batteries, however, i have managed to corrupt
some sequences. that was before i knew you shouldn't switch modes while your
sequence is going. it can result in a randomly programmed sequence. i've also
been syncing it with a modified emu drumulator, which i think adds an element
of instability. anyway , i don't really have an answer for you, but you should
try the x0x yahoogroup.
good luck!,
shayne