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54600B input overvoltage damage

Question asked by colin_a on Nov 21, 2007
Latest reply on Nov 23, 2007 by colin_a
Hi everyone,

I have recently acquired a 54600B Digital scope that seems to have suffered overvoltage damage to Ch1. Ch2 works really well and seems to be within calibration spec. All other functions work on both channels but a test 5v p-p squarewave on Ch1 shows a very distorted waveform (see pic below) and registers only about 300mv.

This scope is now obsolete but I'd like to get it working properly again.

Can anyone offer any advice regarding the solution and also does anyone have a copy of the schematics? I have the user and service manual already but there are no schematics with it.

Thanks in advance