I replaced the large DMD in my Frankenstein pinball and was going great until I switched the machine on again this morning. The game all works but with a blank DMD. I have the upgraded wiring kit installed. F3 fuse is ok. I checked the voltages at P3 - pin1 has 5 volts and pin4 has approx 17.5v - reading the info on the web its says it should be 24v. BR3 top LHS lug is 17.5v. IS BR3 the issue??????