Low mileage 4.5 preamp, new to me

I am just returning to separate components and bought a mint, seldom used, PS Audio 4.5 preamp. There have been some issues with the rotary switches but I have those cleaned up for the most part.

However, somehow I managed to knock loose one leg of a radial 100uf 50V capacitor in the amplifier section. I prefer Straightwire operation, but the preamp did work and now it doesn’t and I want to fix it.

It looks like it might have been a cold joint solder that came loose as I cleaned the pc board and I may be able to salvage and use the same capacitor (they all look great and the unit sounds terrific). The question is, if I bugger this capacitor and have to buy a replacement, can I use any audio rated capacitor as a replacement? Can I mix capacitors? Is this an aluminum capacitor or something else?

The capacitor is purplish in color as are all the others, and is marked CE Japan with a triangular logo next to the copy. I have included pictures. It is also marked Malaysia 8512.

Lastly, does a material specification list and circuit diagram exist for this unit? Thanks for any help.image image image

What you want to buy is a 100uF 50v electrolytic capacitor. Something like https://nl.mouser.com/ProductDetail/Nichicon/UFW1H101MPD?qs=kArNe9LFxXkz9LdK6zz5%2Bw%3D%3D