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Old 1st Jun 2019, 1:42 am   #14
Join Date: Sep 2007
Location: Ranfurly, New Zealand
Posts: 132
Default Re: AVO VCM MkIII repair

Success!! I spread the overwind out on R36 as suggested by Martin and that got me 199.9 Ohms so used araldite to fix the winding in place, refitted the resistor and everything is working fine. I have yet to go through the calibration process, but a quick test with a new ECC88 I had lying around showed the results were very close to the data book figures.
I think it might be prudent if I also fit the 1N5711 diodes across the meter as protection as recommended in other threads.
Thank you to everyone for your help - it is greatly appreciated. Mike
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