Quote:
Originally Posted by Spencervs
Hi all! Thank you so much for the replies! When I was observing the unit, I realised that the leaf switches on the DC side were not engaging at all. I gently moved aside the resistor board which lay on top of the switch mechanism and realised that the screw securing the cam had come loose! No idea why at all. Anyway upon tightening it the unit came back to life. I used some switch cleaner on the relevant parts and pots and I think it's all fine and dandy. Seems relatively accurate compared to my dmm.
I'm wondering how these were calibrated now? And if there is still a service that does it professionally and for a reasonable price.
Thanks again all!
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Well done. This was the same fault as my Dad`s 8 MkII had about 40 years ago, I guess AVO didn`t always do their screws up properly. No trouble since, mine now.