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Old 20th Jun 2018, 7:43 am   #6
Superscope
Octode
 
Join Date: May 2017
Location: St Austell, Cornwall, UK.
Posts: 1,018
Default Re: Original AVO Test Leads. A problem you may not know you have!

Can't disagree with anything said there!

I too, find the Conical Test Clips and the Leads a bit unwieldy & Clunky
to use, but you can say that about the AVOmeter, but we still Love them!
Much better off using a Modern Test Lead for sure.

I just like them to work properly.

Once cleaned (I used a small Brass Wire Brush on the Stainless Thread),
they work fine. Provided of course, the Clip is matched with the correct
Test Lead so a tight electrical contact is made which is not always the case.

A very brief dismantling description as follows:

Looking down the Connector end, first unscrew the outer Brass retaining Screw.
That's the Top Brass piece in my earlier Photo.
You will need to make a special Tool for this, as if it is tight you will most
likely bend a small Screwdriver if you tried to use it.
Pretty easy to make using a small diameter piece of Aluminum Tube found
at most hobby Shops.

Then with a pair of pliers, unscrew the Brass Connector (the lower Brass
piece in my earlier photo). The Steel Test Clip should not rotate, but if it
did (it's probably Shot!) it would need to be secured via it's flat end.

Once unscrewed, the Steel Test Clip pushes out the Clip end.
Don't try to remove it, or insert on assembly in the connector end.

Chances are, the Thread on the Steel Clip is Black and might even be loose.
Classic case of DMC going on there I think.

Assembly is the reverse of course.

Don't try to unscrew the long Probe from the Conical Body, it doesn't work like that, and you will break it!

Finally, get those Leads and clips out and re-discover the Joys of 1960's
Test Leads.


Ian
Superscope is offline