New site for some discontinued keyboard & tr808 parts. Need a Fix? - Technology Transplant
I understand that this is a Chinese company that reproduces old in demand parts. One of my customers has ordered parts for his roland TR808 & keyboards, too.
I see a pic of some tactile switches for the Tr808, but I'm not certain how the buttons would attache to them.
I will caution that he ordered the master vol pot & what he received would physically have worked, but was a 500K instead of a 50K.

Glen