[sdiy] Oberheim OB-Xa noise generator transistor

[Gordonjcp]

On Fri, Jul 13, 2018 at 03:38:37PM -0400, Eric Frampton wrote:
> Hi all,
> 
> I’m working on an Xa whose noise generator transistor seems to have died. In the schemos it specifies a selected transistor, but doesn’t call out what the transistor is nor (of course) what the selection criteria was. Do y'all have any suggestions for how I might go about finding a suitable replacement?

Find one of the suitable "polarity" (NPN/PNP), try various ones until
you find one that's shitty enough.

Even the shittiest £2-per-thousand BC548s from Far Cathay are still a
bit too good for this job, so keep at it ;-)

-- 
Gordonjcp