Need help diagnosing a WPC CPU board that works well other than no lamps will light at all (GI or lamp matrix) I did not think that the cpu controlled GI, but any way I have swapped boards between machines and it is definitly on the cpu board as the lamps work when I put the test cpu board in the problem machine and the lamps dont work when I put the problem board in the good machine. It looks like u13 and u14 had been replaced on the problem board (not sure what they control), but the work looks good and clean. Any suggestions where to look/test or what the problem might be?