> Thanks DieterI've re-seated the cable that goes from the
> controller and into the main boards of the A155 and it now
> works...well almost!Reset and Clock still don't work. Could that
> be a cabling issue from the A154 to the (redundant) controller
> board of the A155
> Mark

Pay attention that the reset works different from the A-155. Details in the
A-154 user's manual.
What happens if you connect an external clock (e.g. an rectangle LFO) into
the Ext.Clock socket

Best wishes
Dieter Doepfer