Hello Stefan,
These boards are not for the faint hearted they have some CMOS chips in them and are subject to static discharge handling techniques. The boards interact with each other so when we repair them we ask for the following boards which we then test/repair:-
Memory Unit 601-07666 (it could however have the later 301-07855 fitted)
Selector Logic 601-0860
Mechanism Control 401-06905
Just check out the connection pins on each of these boards for dry joints (cold joints USA) cracks around the solder of each pin.
Remember you will have to earth yourself before touching the circuit boards of both the memory unit and the selector logic.
Do not try soldering anything else on the circuit boards because if some has been over the component connections it makes it difficult if a professional has to do any work on it and makes it more costly to repair.
If you need any information or advice by all means please feel free to contact me.
Regards
Alan
Alan Hood
ami-man
UK
alan-hood@datex.co.uk
