PDP-8/a cleaning

[Pontus Pihlgren]

Hi

My PDP-8/A is up for restoration. More specifically and 8A100 according 
to it's ID plate. It is in overall "ok" shape but oh so dusty.

I'd like to give it a good cleaning so I'm tearing it down. And I'm 
looking for suggestion to cleaning the backplane and regulator board.

I'm considering putting the Omnibus part under warm water and perhaps a 
bit of mild detergent. Should I get distilled water or will tap do? The 
water here is not very "hard"

The regulator backplane has a relay and a button which will never dry 
out if I soak it...

Thanks in advance,
Pontus.