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HP 1741A oscilloscope - restoration project

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factory:

--- Quote from: electronix27 on August 09, 2024, 11:34:13 pm ---
Hi everyone, bit late to the party here.  Just picked up an HP 1740A, and enjoyed reading this post.  There are a few circuit issues but the CRT is in great condition.  Figured I’d start with a good cleaning.  Bit stumped on how to remove the sweep dial from the shaft.  Appears to be a small C clip on the notched shaft or maybe something I’m missing.  Appreciate your help.

Much Thanks

--- End quote ---

Those counting dials are used on a few HP scopes & plug-ins, it needs a special tool for the nut, the alternate is to make one, as I did.

David

electronix27:
Thank you sir.  I suspected this may be the case, but have not seen this on a potentiometer.  A tremendous help knowing, I’ll have to make one like yours.

Much appreciated
Russell

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