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Old 8th Apr 2020, 11:33 am   #5
peter_scott
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Join Date: May 2003
Location: Edinburgh, UK.
Posts: 3,274
Default Re: Avo 2 Panel Valve Tester Success - sort of!

Quote:
Originally Posted by Silicon View Post
I have seen 'tin whiskers' on old AVO meter movements.

They are so thin they are almost invisible. There may be some that are interfering with the movement.

A magnifying eyepiece and a portable light source will help you see them.
You can usually push them out by sliding a little strip of paper between the pole pieces and the moving coil.

Peter
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