I have no problems with my LED's when the machine measures the board. I also added a few over the display to help me see what is on the screen. Both are wired together and to a 12vdc power supply. This is where I added my lights, I just used a hot glue gun to hold the LED's in place in a few different places. These are the same lights that I use on my lithopanes inside of the box. Hope this helps.
CarverJerry
ver. 1.188 Win 7- 64b with 6 GB ram @ 2.8Ghz and dual 1Tb hard drives. Rock Chuck & Ringneck vacuum system hooked up to a Harbor Freight large vacuum. Center line text, conforming vectors.