Powered up my Bridgeport CNC Series II Boss 6 after a peroid of being idle. Unit failed with the following symptons:
At power up the console readout display flashes 000 60007 then goes blank. The Run, Goto, and Hold LED's are steady for about 3 seconds and then extinguish followed by illumination of the ABS LED. The limit switch is illuminated but can be cancelled. Upon cancelling of the limit switch and a reset (tape drive cabinet) the spindle can be started. The only other item that does anything is the edit button can be pushed resulting in the Run LED illuminating. The Hold button will also illuminate the Run LED. Once the Run LED is illuminated it will extinguish after about 15 seconds. No other functions appear to work.
Things we have tried:
Removed and cleaned all PC boards using contact cleaner, soft toothbrush and low pressure compressed air. Used an eraser to clean the backplain contacts. Adjusted the voltages (small blue and violet wires above power module) to 05.00, 12.00, -12.00 VDC. All voltages are steady and do not change any when power is applies to the spindle.
Checked both regulated and unregulated voltages and nothing appears to be outside the norm.
Any help would be appreciated!