11/34a problems continue

-----Original Message----- From: Julian Wolfe [mailto:fireflyst at earthlink.net] Sent: Friday, March 03, 2006 5:40 PM To: 'General Discussion: On-Topic and Off-Topic Posts' Subject: 11/34a problems continue Well, I've been messing with the 11/34 on and off now for a few months as I feel like it. The problem right now is that I have no light on the H745 power regulator. Both lights are on, on the two H7441s in the other slots. If I need to measure draw on the backplane to solve the problem, where do I do it from? If on the power distribution board or backplane, then at what points? Secondly, do certain modules need to be installed to utilize the H745's resources? (i.e. a device that uses -15vdc) or should the light come on anyway from just being connected to the power distribution board? I've tried with both those modules in and removed from the system, and it didn't seem to make a difference. What do I need to do to diagnose this problem? It's really driving me nuts. Appreciating any help you can give, Julian