Help me reparing old Roland TD-7 module please.

[Studiostriver]

Hi to all.
I`m aware this is synth oriented forum but i really googled a lot online and i couldnt find any information i needed.

I need to replace tactile switches, encoders and L/R outputs for this old module. I have very nostalgic and emotional bond with this piece of equipment cause my father used it over 15 years for his gigs as professional musician. I would really want to make it fully working again.

Can you help me identifying what exact components i need to get?

Here are provided pictures.

[Studiostriver]

Last one picture that i needed to show added.