Sequential circuits samplers

I recently had what sounds to be a similar problem with my P2K and I
took it in to be serviced.
The problem was traced to a defect in the power supply.
I dont have my prophet opened up right now to take pictures but the
service invoice says that a Diode (part # 1N4007) was replaced.
And now it works fine. Apparently the diode is only $5 (Im in Canada)
but of course the service cost $90 in the end...go figure.Either way
Im happy to have that problem out of the way.
I remember the diode being to the right of the power supple on the
upper left part of the main board...I may be wrong but thats the area
its in Im pretty certain.
Hope that helps!





--- In prophet2000@yahoogroups.com, "duncan" <ferrograph@...> wrote:
>
> >>By the way, I know the transformer and everything before it is good
> > because if I disconnect the transformer from the main board and turn
> > the machine on, then it does not blow the fuse.<<
> 
> then it might be the bridge rectifier(s) between the output of the
> transformer & the regulators you just changed. it could still be the
> remaining regulator, but as you say this is now unlikely- the -12V
> rail it supplies is quite a low draw. also look at the smoothing
> capacitors & any tantalum bead capacitors around the power supply.
> can you be sure that the main boards themselves aren't the problem?
> can you disconnect them from the power supply? I will get the lid off
> my 2k2 this weekend & have a look to remind myself.
> 
> d.
>