Products > Test Equipment

HP 1741A oscilloscope - restoration project

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AlienRelics:
Wow, this is a long-lived thread.

I was just given two 1741A 'scopes for free. I have no idea what is wrong with them, other than that they do not work. I'll be posting pictures and progress.

tggzzz:

--- Quote from: AlienRelics on April 17, 2016, 12:36:15 am ---Wow, this is a long-lived thread.

I was just given two 1741A 'scopes for free. I have no idea what is wrong with them, other than that they do not work. I'll be posting pictures and progress.

--- End quote ---

If you don't have one and need to open it the 1741, strongly consider getting the service manual from http://artekmanuals.com/manuals/hp-manuals/

AlienRelics:
Thanks!

I did find a free source for a PDF of the service manual.

techie1234:
Keeping this thread alive...I'm working on a 1743A and am having problems with TIME/DIV controls.  The main control won't rotate more than a couple of positions CW or CCW - sounds like it might be a bent contact in the rotary switch or perhaps some hardened grease.  Also the delay TIME/DIV knob cracked off, but at least the shaft rotates easily by hand.  And those grub screws in the knobs are a pain - wish they would have milled some flat surfaces into the shaft so the set screws could mate flush.  Seems like this is a weak point on these scopes.  Will be having a closer look inside...

My main question is: is there a version of the 1743A manual that has as much detailed repair information as the 1740A one?  The 1743A manual on the Agilent site:

http://cp.literature.agilent.com/litweb/pdf/01743-90905.pdf

has a BoM and exploded diagrams but not a schematic, repair procedures, etc.

Also, are there any recommendations on who sells various parts (like the aforementioned cracked delay TIME/DIV knob) for the 174x series?

tggzzz:

--- Quote from: techie1234 on July 09, 2016, 12:47:28 pm ---Also, are there any recommendations on who sells various parts (like the aforementioned cracked delay TIME/DIV knob) for the 174x series?

--- End quote ---

Sphere (Canada), QService (Greece, US), ebay.

It is useful to have exact part numbers, which you can find in the service manual.

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