Aristocrat Mk 6 Video Error

[Reelgames]

I recently sent two machines to Australia.  They are Aristocrat Mk6 machines running NSW Games.   Both machines are coming up with "Driver Board SPI Failure".   Can anyone give me any ideas on this.  Both machines were running fine on arrival.  Apparently when collect was hit,  this message came up on first machine.   Then second machine followed.  Machines at different locations.  Both main processor boards tested and are ok.

Message comes up during boot cycle then cycle starts again.  Weird!!

[t4799]

Not sure if this helps, however I recall a similar thing happened to a friend of mine's machine. The game was running fine until the reserve button was pressed and the machine flicked in and out of the reserve. When the machine was restarted the game would complete the loading screen and then restart just before the game was shown. On changing boards to another Mark 5 or a Mark 6 board the machine would either do the same thing or would load, but none of the buttons would work, even in the audit menu.

What it turned out to be was that the comms board had lost some of the jumpers and when it was replaced all the games worked properly.

I am assuming that the machine is similar to mine and not still setup for some system like at my local where pressing collect causes a comms board port 1 error. Perhaps swapping the driver and comms boards around with two known working boards might help isolate the problem. This however will be difficult due to the different areas where they are located.