In Reply to: Wanted: Manual/circuits for Tek 453A scope posted by Peter Johnson on 04/10/00 at 8:41 AM:
Congratulations on owning the longest-lived model Tektronix scope ever. Back then, Tek normally supported an instrument for 12 years after it was dropped from production, but the 453/453A was so popular that they extended that support period for another 4 years or so.
Here's a lot of sources for used test equipment manuals:
There may be a schematic source online at these sources:
A couple of sites that list manual sources are at:
And not on the WWW is:
San Diego CA 92149 USA
619-479-0225 (voice) 619-479-1670 (fax)
There's a site in your neck of the woods (well, across the Channel anyway) devoted to the older Tek instruments they're at:
As I recall, there are still a couple of ceramic strips used in the 453A, probably around the HV area. You MUST use silver-bearing solder on these strips (Sn62/Pb36/Ag2 -- sometimes Ag3). Conventional 60/40 or 63/37 solder will leech the silver from the strips and wreck them.
Good luck with your repair!