I just measured mine (which is working reasonably well). The output
 at the secondary of the transformer is 46.5 Vac. The voltage measured
 across the large filter capacitor was 22.4 Vdc. Bear in mind that
 these are with a 120 Vac/60 Hz line input voltage, so what you see in
 the U.K. may well be different than what I'm seeing in America. I
 hope this helps.
 Good luck,
 Mike
 Houston, TX USA
 --- In
korg_mono-poly@yahoogroups.com
, "nowdigitaluk"
 <tim.cockram@...> wrote:
 >
 > Hi,
 >
 > My Mono' needs help, anyone any idea what the output voltage of the
 > transformer or voltage accross the smoothing capacitors should be
 >
 > Thanks
 >