HP 1740A on the bench, help please?

[Specmaster]

Yeh, its all plugged together but some of those plugs are pigs to get to with big hands  mine is the OS-9100D, 100Mhz so is a little bit faster and therefore a bit more fussy over its parts, its in really good condition cosmetically and internally as well and has a party trick that it can become a 3 channel scope and uses the trigger control as the vertical position control for the 3rd trace. It also has time delay and you can separate the delayed trace from the main trace as well, neat. My overall favorite though is the Iwatsu, 4 channels (2 are only up to 1v) but it has so many controls and it too can separate the delayed trace from the main trace. It has one main issue, still useable, and that the timebase and delayed timebase are as always a dual concentric control, but this one is a triple concentric control as it as it has a variable delay pot as well and like the 465 / 475 with exposed controls, this one sticks right and is the thing that gets hit and bent. To use the delay on mine is a 2 hand job, 1 to hold the pot still and the other to click through the fixed settings.