Repairing Tektronix 2225 scope

[Shock]

According to the web they were manufactured between 1987 and 1992.

The Motorola ICs on the first image you uploaded have 91?? markings. It follows the YYWW format so that one was likely manufactured late 1991-1992. Someone also has written in a date on that bracket.

The green one is hard to see but there are a few 86?? date codes and ones 8640 so late 1986-1987 perhaps.