Tektronix DPO4104 self test errors. Repair attempt diary (referral)

[analogRF]

I have got a DPO4104 with acquisition errors and I have been talking only to myself here:
https://www.eevblog.com/forum/repair/tektronix-dpo4104-self-test-errors-is-there-any-description-available/
for days with no comment from anyone else, not even about the configuration and design of this scope which I posed a couple of questions about.

so I thought maybe I started the thread in a wrong place.

I don't want to repeat everything here, so please visit the above thread and go through the posts and leave comments if you have any.

thanks