Shailendra,
How did you go about Finding that Faulty Potentiometer?
JR
On Fri, Nov 8, 2019, 9:13 AM skv1958 via Groups.Io <skv1958=
[email protected]> wrote:
Hello JR,
In my 465b, this short sweep/trace problem was due to a faulty
potentiometer, x1 gain in the horizontal amplifier section. Replacing this
pot and adjusting 1x gain fixed this problem for me. It was a Bourns 3352
series pot, which had lost contact from the slider with the track.
Later I found many other faults in my scope, which were all due to failed
or about to fail Bourns 3352 pots in various sections. They all had similar
failure, probably due to ageing. I ended up doing a full replacement of all
Bourns 3352 pots in the scope and then calibration of circuits where the
pots had failed.
Hope this is of some help.
Shailendra
