--- In tr-707@yahoogroups.com , "acousmatique" <acousmatique@y...> wrote:

> --- In tr-707@yahoogroups.com , "mda231" <mda231@y...> wrote:
>
> > I am trying to find a main volume potentiometer for my TR-707. Does
> > anyone have a source for where I can find this part - Roland in the
> > UK does not have them.
>
> The sliders are probably not special Roland parts, but rather

typical components. It's a bit

> of a PITA, but I'd measure the dimensions of the slider including

the spacing of the pins.

> The slider should probably be removed from the PCB for this. A ruler

and some patience

> will do, but calipers are just the thing.
>
> Then I'd do some research on the websites of big parts distributors

(Mouser, Jameco,

> Farnell, etc) to see what they offer for sliders of the same

resistance. There will often be a

> spec sheet or diagram linked which shows the dimensions of the part.

Their biggest

> customers are manufacturers who don't want to buy thousands of a

part which won't fit

> their product on the assembly line. I expect you'll find compatable

sliders, and they'll be a

> lot cheaper than from Roland. But it's work.
>
> CJ

Thanks for the tip CJ. You're right, it is a lot of work, but seeing
as Roland in the UK don't have any, this might be the only way forward.