Hello all,

We just got this retired WA20 wavemeter donated to our lab from Los
Alamos.
I haven't cracked the case open yet but when I plug it in I hear a
revving noise which I'm guessing is a bad belt.
Considering the cost of these machines as well as their sensitivity I
was hoping to find somebody with a tech manual I can go over before I
start this project.
EXFO, the company that acquired Burleigh doesn't have any
documentation on their site available. I'm going to phone them but I'm
guessing I'll come up empty handed... this has been discontinued for
too long I guess.

So... before I bite the bullet and open this up I wanted to gather as
much info as I could.... has anybody here ever repaired the belt in
these things? Any tips? Alternatively, does anybody have or have
access to a tech manual?

Thanks for reading,
-Matthew