I am restoring DX100. I would like to replace mod/pitch pots as well as volume and data slider pots.
Does anybody knows original part numbers or suitable replacement part numbers?
If you don’t have it already this is the service manual. Page 20 does have part numbers, but they are Yamaha part numbers, so any cross compatibility with non-manufacturer replacement parts you’ll have to research on your own. Good luck, nice project!
yamaha-dx100-service-man…pdf (3.5 MB)
Thanks. Yeah, I have the SM and references there are less than useless 
That’s why I posted here hoping for more details.
sorry to have been less than useless
it is not what i meant i referred to codes in SM
a bit of a progress
Pots in DX were made by Panasonic. Pitch bend pot is a 4 leg pot (with centre tap).
Have you seen this already?
Spare parts and replacement keys for Yamaha DX100 Synthesizer | Synth-Parts.com
Yes, it is my last resort of action to buy them from synth repair shops. But my DIY nature doesn’t allow to take shortcuts at this particular point.
I can relate, it’s like having a tooth pulled…
out of your wallet 
This is very DIY but maybe helpful if you want to try and rebuild using the original housing with the weird pin config:
watched it already but thanks for the vid