So these didn't work. Testing showed +9 to +15V on the -12V rail......yuck.
Inside was a bit hairy, with some interesting mods. One panel was obviously DIY, the extra output connectors are a complete mystery. The wiring and soldering is quite poorly done, really not up to the standard of the modules. There is so little info available on the keyboards.
Doesn't really look stock, feel free to correct me. These are on both keyboards but only wired up on one.
back view
power connector, top is +15V, bottom middle is -15V, bottom right is gnd
Arp for lunch
the red & black wires go to the external input socket
Pretty shitty job on these sub-modules
A nice short circuit between the +V and -V rails, took a while to find. Obviously a wire brush and a rewire are on the cards.
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