Hi Boys !
More for pride than other, I started with the impossible endeavour to repair an old TEK 5441 oscilloscope of the years seventies. No troubles at a first glance: I have yet an other working unit of the same type and I am equipped with manual and schematics. But... The issue under repair (serial n° B093328) has been heavily modified by TEKTRONIX in the HV, orizontal ampl. & storage sections. No trace of these changes on internet or the manuals in my hands. Lacking this data, any effort became impossible. In short: Does anybody have schematics of the B09XXXXX series of the 5441 scope, or any notice about the above-mentioned modifies...? Thanks anyway to all those will read my message.
Best wishes,
Gianni I4-MGA Bologna, Italy