Neuberger RPM 370 Tube Tester - Small Shorting Plugs Query

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Neuberger RPM 370 Tube Tester - Small Shorting Plugs Query

Postby xlr8or » Mon Jan 13, 2014 6:13 am

I was wondering if anyone could tell me what can be used in place of the small shorting plugs used on a Neuberger RPM 370 tube tester.

I just acquired this wonderful tube tester devoid of the full set of shorting plugs. Can a simple 4 mm banana plug be used in place of these plugs?

Are these generic plugs still available for purchase from any online store?

Thanks in advance for any information provided.
xlr8or
 
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Re: Neuberger RPM 370 Tube Tester - Small Shorting Plugs Que

Postby xlr8or » Mon Jan 13, 2014 11:04 am

I should also mention that the dual line circuit plugs are missing as well and I need to also find substitutes for these special plugs.

If you are able to recommend any alternative parts or can take any close-up photos of these specific parts please contact me.

Thanks
xlr8or
 
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Re: Neuberger RPM 370 Tube Tester - Small Shorting Plugs Que

Postby zizt » Mon Jan 13, 2014 12:50 pm

Hi guys,

it's my first post here, so hello to all of you.
Great community :-) !

xlr8or, as you mentioned you need plugs for Neuberger 370...I also need them for RPM375.
I think we should find the same form as original, because usuall 4mm banana probably does not support same surface contact area.
I saw such plugs (as original) from time to time on Ebay, but not complete set (only a piece or a few).

Regards
zizt
 
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Re: Neuberger RPM 370 Tube Tester - Small Shorting Plugs Que

Postby xlr8or » Tue Jan 14, 2014 10:54 am

Unfortunately, I've just learnt that 4 mm banana plugs cannot be used since they are too large in diameter to fit the shorting plug holes in the Neuberger RPM 370, 370/1 and 375 tube testers. It seems that the correct diameter that fits is 3 mm or, more precisely, 2.74 mm.

I'm not sure about the dimensions of the line circuit plugs.

I've attached a detailed photo taken from another forum showing the dimensions of these shorting plugs.
Attachments
Stecker+RPM370+IMG_0176+2.jpg
Neuberger RPM 370, 370/1 and 375 tube tester shorting plugs
Stecker+RPM370+IMG_0176+2.jpg (41.62 KiB) Viewed 6670 times
xlr8or
 
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Re: Neuberger RPM 370 Tube Tester - Small Shorting Plugs Que

Postby zizt » Mon Jan 27, 2014 10:00 am

Hmm, I wonder if banana from photo below would be the one we need.
I'll ask for precize dimension.
Although it looks 4mm type, it's squeezed when pushed into a socket.
Attachments
201312201614464436.jpg
201312201614464436.jpg (238.18 KiB) Viewed 6635 times
zizt
 
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Re: Neuberger RPM 370 Tube Tester - Small Shorting Plugs Que

Postby zizt » Wed Jan 29, 2014 8:27 pm

Just got a sample, it doesn't fit.
It's too wide, too big.
Actually for maybe half of mm.
zizt
 
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Re: Neuberger RPM 370 Tube Tester - Small Shorting Plugs Que

Postby Jac19 » Fri Feb 14, 2014 9:43 am

better is to repair the old plugs.

Just make a tool from a plier. One end you grind until it is 1mm thin, and the tip make it sharp. So you can stick it underneath each wire. Just straighten then one by one. Adjust the shape of the plier nicely, so it fits underneath best way. You need a plier that has no profile from the inside, such pliers excist. The regular pliers with profile inside, you can't use to flatten a wire. I use a simular self made tool to straigten tube pins.
Jac19
 
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Re: Neuberger RPM 370 Tube Tester - Small Shorting Plugs Que

Postby eichlera » Fri Mar 14, 2014 2:39 am

Sorry for being a bit off the subject, but since you're discussing a Neuberger Tube Tester I'm hoping someone here might be able to help.
I'm looking for an English operation/user manual for the Neuberger RPM 375 Tube Tester. Would greatly appreciate any suggestions where I might obtain one. Thanks
eichlera
 
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