Re: AVO Mk 2 (HELP)
If it's been kept in the damp it first needs to be dried thoroughly, such as by leaving it in an airing cupboard for a couple of weeks.
After that, well damp is pernicious and you could find you have resistors which have changed value, contacts which won't make properly, meter movements sticking. You just have to go through the whole thing thoroughly, cleaning switch contacts and checking that everything is as it should be, with no grey joints, drifted components or broken wires etc. .
If you are relatively new to this, it might be an idea to set it aside for a few months and have another look at it later.
Pete.
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