I would strongly recommend that you use a programmable or variable
multi-output bench power supply unit to ensure that your synth is
still in fact working.
However, first use a voltmeter and ohm-meter to test the synth for
shorts on the rails and the voltmeter to test your power supply outputs.
When working with PSU's, having a bench power supply is invaluable in
ensuring that your gear is actually working (i.e. that you have
decoupled your work on the PSU from work on the synth).
Cheers!
--- In yamahacs80@yahoogroups.com, "Heath Finnie" <heathfinnie@...> wrote:
>
> In my continuing adventures with this thing I realized that my
latest problem is a loss of
> these two voltages from the PSU. I replaced IC722, and both 1000uf
caps. I'm trying to follow
> the instructions and run the PSU separate from the rest of the synth
by connecting the +15
> to +15S and -15 to -15S and I'm not getting any proper voltages
running it this way.
>
> Heath
>