emu sp1200 main pcb in progress

[DogNamedLilly]

hello boom bap lovers out there!
i am just working on a new pcb of the sp 1200 main board.
i do this, because the original pcb is not available anymore.
if there is anybody out, who is also interested in a pcb, i can
do some more. i think, it is posssible, to build an complete machine with this, but
my intention is to help a friend to repair his totally broken machine,
and i want to cover some costs for the pcb manufacturing.
thanks for watching!
Adam

[DogNamedLilly]

I checked the schematics, and compared with the original pcb, I noticed different
IC´s, for example the ultrarare 74HCT504, which works as in combination with the DA as AD converter, is different on the pcb.
does anybody know something about that?

[tobb]

Depending on the asking price,it might be interesting to buy just as a spare part.

Keep posting on your progress!

[devinw1]

I've said it once and I'll say it again: If somebody does a DIY kit for a SP1200 clone, I AM FULLY ON BOARD!

[MoyaMoya]

How difficult is it to source replacement buttons?

I've looked before.. but seem to remember having a fairly difficult time, except for well the rather expensive N.O.S. ones on ebay.