Accessing the PSU boards is a nightmare in this scope.
Anyway I found a blown fuse and the rifa caps are not is great condition.
I will replace the fuse and the rifa (if I can find the adequate replacement parts) and see it the display comes back.
Accessing the PSU on a no option 2445/2465 is not bad. This, my friend, is the nightmare. I fully optioned 2445/2465 with DMM and Counter/Trigger options.
https://www.eevblog.com/forum/testgear/tektronix-2465b-oscilloscope-teardown/msg1861713/#msg1861713
Someone please enlighten me why the repair of the 2XXX series Tek CRT scopes makes sense at all. They are:
- a nightmare to access parts
- full of dried electrolytics and RIFA time bombs
- built to overheat (at least the faster models), with special unobtainium ICs needed to repair
- in no ways better than any 1K€ 2020 scope with more channels, better frequency response, digital memory, ...
The old 7XXX modular types had some class and were a pleasure to fix in comparison.
So, is TEA related to masochistic practices or occult religions ? Cargo cult ? The church of TEK ?