1950s oscilloscope restoration (help needed)

[Drayson]

Hello everyone, I just received a 1950s WO-33A oscilloscope, and my goal is to restore this thing to working condition. However, I'm not exactly sure where to start.

Spoiler: Pictures

I don't intend on reselling it or anything, this is just meant to be a fun educational project for me, as well as something extremely old to have in my collection.

If anyone has any tips on dealing with ancient tech like this, I'd gladly appreciate it. Thanks in advance!

 

[PT-2]

I'm not familiar with the scope, so just passing on some obvious links:

Manual (specs, operation, maintenance): https://archive.org/details/RCA_WO-33A_Oscilloscope

Rejuvenation project by Chris Prioli, AD2CS: https://web.archive.org/web/2024052...s/1/1/5/5/11554662/ad2cs_rca_wo33a_repair.pdf

And some obvious advice: Be very careful working with high voltage equipment. The capacitors can hold a charge even when the scope is unplugged.

Round CRTs, so charming...

Good luck!

 

[Drayson]

Thanks a lot, this will be very useful