[Superscope]

Was just checking out an AVO 8 I bought recently, which
clearly had an intermittent fault.

Problem turned out to be in the Conical Test Clips.
I had assumed, these were a straight piece of Metal from the Terminal
connector to the Test Clip.
But No!
The Test Clip seems to be Stainless Steel, and this is screwed into the Brass
contact which then plugs into the Test lead.
There was corrosion in the Joint which required cleaning. Problem solved.

That prompted me to check all the Conical Test Clips in my collection.

I was surprised how many were OC or High Z.

I also noticed that there is a variation in the inside Diameter of the Test Lead Socket.
This means that conical Clips from different periods don't necessarily make a good electrical contact to the Test lead.

So for the AVO collectors out there, don't forget to check the Leads, they are likely to be intermittent.

Doesn't effect the Croc Clips of Brass Probes.


Ian