I will try and talk to the instructor and sent him these details.
Will let you know the outcome.
Thanks again for your help,really appreciate it.

Eventually found out that old programs run ok. When a new program is generated via cam designer it generates 2 M codes M66 & M62.(aux input/output) Both are disabled in parameter settings.When it reads these at the start of program the machine will go no further, the egg timer appears on the pc. The...

Instructor can't tell me very much.
States that when he is in machine mode the top left hand corner indicates VR mode.
Axis are moving at a snails pace?
I have asked him to power down,home axis and try spindle in MDI mode.

Looks like the output driver 2803 done the job. I replaced this i.c. U12 and managed to run the spindle in program using machine mode. Customer has come back today and stated he cannot run the program in VR machine! I believe there is a setting on one of the drop down menus to select spindle manual ...

Thanks for post, the school is closed all this week.
In the meantime I will buy output drivers ULN2803 and revisit next week.
The board has a 7 segment display and I believe it to be a Denstep.
I will keep in touch.

Spinlde will not start on Novamill (2001) Output on T/B3 pin 2 should switch to zero volts to energise SGR relay and allow spindle to run. I have disconnect this wire and shorted it to 0V and spindle runs as normal. Has anyone a procedure to load easy upgrader to a machine that is not connected to t...