Author Topic: Sourcing parts for 3478A?  (Read 526 times)

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Online TERRA Operative

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Sourcing parts for 3478A?
« on: June 19, 2018, 02:19:22 am »
I managed to pick up an old HP 3478A in Akihabara for 3250yen today (around $35), a price I couldn't pass up working or not..
I got it home and it turn out that it actually powers up and self tests ok, the voltage readout matches my other meters too!  ;D  Not bad for $35!
Funniest part of it all is that I just ordered a 34461A yesterday... Murphy strikes again....  :-DD

Now, I want to fix it up for the bench, and apart from the usual battery and capacitor replacement, there are a few bits I need that I am having trouble finding.

I need the current input jack/fuse holder, and also the two little push button caps for the power switch and the front/rear jack selection switch, also case feet too, but I could just 3D print them.

Does anyone know where I can find these parts, or even maybe happen to have an old machine they are willing to sell me some parts from? :)
 

Offline ddcc

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Re: Sourcing parts for 3478A?
« Reply #1 on: June 19, 2018, 10:33:56 am »
The fuse holder looks fairly similar to the one used on the 34401A. If it's the same, you can get the parts through Keysight: https://www.keysight.com/main/editorial.jspx?ckey=365873&id=365873&nid=-11143.0.00&lc=eng&cc=IN or Schurter: http://www.eevblog.com/forum/testgear/rear-fuse-cover-for-agilent-34401a/.
 

Online TERRA Operative

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Re: Sourcing parts for 3478A?
« Reply #2 on: June 19, 2018, 11:42:03 am »
Nah, the rear fuse cover is ok, I need the front panel one that has the current measurement jack integrated into it. It seems these are somewhat harder to get.
 

Offline ddcc

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Re: Sourcing parts for 3478A?
« Reply #3 on: June 19, 2018, 12:56:17 pm »
Oops, missed that. Looks like you want part numbers 5061-1163, 4135-0415, 4135-0416, and 5040-7201, respectively. The first and last seem to have shown up on eBay in the past, but there's nothing there now. An older thread (http://www.eevblog.com/forum/testgear/hpagilent-snap-in-cabinet-feet-all-the-same/) suggests that you can substitute 5041-8801 for the latter, which are available on e.g. eBay.
 
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Online TERRA Operative

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Re: Sourcing parts for 3478A?
« Reply #4 on: June 19, 2018, 01:12:11 pm »
Oh nice, there's one thing struck off the list.

Thanks!  :)
 

Offline Ordinaryman1971

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Re: Sourcing parts for 3478A?
« Reply #5 on: June 23, 2018, 05:23:06 am »
Found two fronts
 

Online TERRA Operative

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Re: Sourcing parts for 3478A?
« Reply #6 on: June 23, 2018, 12:35:25 pm »
PM Sent!
 


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