Intermittant / vibration problems
Models that use 0.15 inch power connector interboard connections
, loads of them for signals, control and power between 2the 2 main boards.
Otherwise neat idea, line of sockets on each board and then the line of pins
that would normally by soldered to a board used to bridge the 2 sets of
sockets.

The old problem of the pcb holes too large for the solder part of each
connection plus not enough solder.
End result , eventually microscopic rings can form around the periphery of
the holes.


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Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/