UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

pmmunro · 24th Jan 2020, 1:37 pm

Just to add a little to what Ian and Dave have written, the pointer could be bent due to a secere overload.

With care straightening is not too difficult but you will probably have to rebalance the movement afterwards. As your meter is a Mark II, it will probably have the type of cut-out with the die-cast components. The cut-out pushrod in this type is just a straight length of spring wire - which is very easy to lose. The sensitivity of the cut out should be checked, and if necessary, adjusted each time the movement is removed from the front panel.

PMM

24th Jan 2020, 1:37 pm	#7
pmmunro Octode Join Date: Jul 2004 Location: Dundee, UK. Posts: 1,812	Re: Avo Model 40 MkII Just to add a little to what Ian and Dave have written, the pointer could be bent due to a secere overload. With care straightening is not too difficult but you will probably have to rebalance the movement afterwards. As your meter is a Mark II, it will probably have the type of cut-out with the die-cast components. The cut-out pushrod in this type is just a straight length of spring wire - which is very easy to lose. The sensitivity of the cut out should be checked, and if necessary, adjusted each time the movement is removed from the front panel. PMM