Products > Test Equipment
HP 1741A oscilloscope - restoration project
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tekfan:
This is to all of you who are afraid to spend too much money on a scope that they don't know if it works or not. I'll try to show (hopefully) how to restore a scope in the most awful condition you can imagine.

OK so recently I got a HP 1741A 100MHz dual channel analog storage scope from ebay for an insanely low price. This picture was in the auction. Although a bit dirty, it looked quite promissing.


The package arrives. The scope was very well packed indeed. The box was almost a meter high.


This is how the scope looked when taken out of the box. As for the picture in the auction, appearances can be deceiving.


Shot of the scope from above. Notice I immediately unplugged the anode lead and touched it to ground just incase.
As for the carpet......dot't ask.


So first thing to check in an analog scope is the CRT. Prying off the rusty base connector wasn't easy.


Tube lifted to slide out from the CRT shield.


CRT on the table. It doesn't look good. The getter evaporated.


The neck of the CRT is broken so this one is useless. :'( (unless you've got an induction heater, diffusion pump, glass blowing lathe.... you get the picture).
Sadly I don't so what now? The electron gun makes a nice ornament though. ;D


It's a too nice scope to throw away or just use for parts so after a bit of searching I found a used CRT on ebay and the restoration will continue.

I will post more information as the restoration continues. Comments appreciated.




Bored@Work:
What did you pay for it on eBay?
saturation:
Very nice tekfan,  if you photograph the before and after as you move forward, it would make a great documentary!
Kiriakos-GR:
I love restorations, but among the others damages, looks that there is too much salt in there.
This item looks to was near to sea water for long time.

I wish you all the luck of this world, you will need it.  :)
Alex:
Lovely scope, shame to the seller! Nice HV connection too. How much was it? Have you restored any valve scopes like...

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