OK so i'm back with yet another MAC 500 question. This forum got me through the last problem (THANK YOU SO MUCH EVERYONE) so lets see what we know on this subject. I have a MAC 500 that resets when I send it a LAMP ON command from the console. It resets properly with no errors. If I go up and lamp on at the fixture the lamp strikes normally. Then it operates normally so it's not an issue of the address being off one number I checked that. It also will reset when you send a RESET command from the console (I thought what the heck maybe it will lamp on if I send a reset command). It is not something in the patch i also checked that nothing has changed. Anyway any ideas??? Or do I just have two soft reset options on the console now?