[A6] How to check a used Andy?

[Dmitry Baikov]

Hello, my name is Dmitry. I am from Moscow, Russia.
I hope to stay in this list for a long time :)

I'm going to buy used Andromeda on Friday. Can you tell the most
effective method for checking it? Analog and digital differences show
up even here. Digital either does work or not. Analog can be partly
working.

Yes, I know such a complex beast better to buy new, or at least
covered by warranty, but here in Russia, brand new Andy (the only one,
gathering dust in the only shop of the only dealer) is $3800
(unreachable), and I found used (spoken to be in excellent state) for
$2200. It was bought August 2003 and used only at home.

So, the question is: given limited amount of time, where, how and in
which order should I check the Andy in the most effective way?

Thank you in advance.
Dmitry.