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Old 21st Jan 2020, 11:47 pm   #2
Superscope
Octode
 
Join Date: May 2017
Location: St Austell, Cornwall, UK.
Posts: 1,018
Default Re: Avo Model 40 MkII

The simple answer is Yes, it is perfectly possible to straighten a Bent Pointer.

However, any work on the Movement needs to be carried out with the greatest
care. It is a fragile component when removed from the protective environment of
the Meter.

The Meter Movement (Including Swamp resistor) is held in place by Two Brass
Screws. These will be fairly obvious when the Case is removed and there are
Two or Three connecting Wires.
It is very important that no ferrous Screwdrivers or Tools are allowed to come into
contact with the Magnets, as there is the possibility of loss of magnetism and hence
meter sensitivity.

The method I use is to locate the exact location of the bend and place
Two supports equal distant from the centre point on the inside of the Bend, then to apply
pressure to the central point on the outside of the Bend.
This tends to straighten the Pointer nicely, but it can put pressure on the Pivots so
you need to be very careful.
Hope that makes sense.

The pointer is very flexible and does not take much effort to bend back into shape.

If the Pointer is bent, it almost certainly means the Movement has been out of the
Meter housing at some time and probably been placed face down accidentally on a worktop.




Ian
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