View Full Version : HEIDENHAIN VRZ 731B - Blowing Fuses

06-02-2017, 05:36 PM
Hi, I have a HEIDENHAIN VRZ 731B fitted on a Bridgeport Milling M/c. Was all ok but now just blows the 400mA fuse on the back. No lights, nothing. Any ideas? Anyone have a circuit diagram for this?

John S
06-02-2017, 09:22 PM
Get Heidenhains number off the web and give them a ring.
I have found them to be most helpful in past circumstances unlike Fanuc who even want a credit card number to talk to you.

06-02-2017, 10:52 PM
I did try them. They say the support stopped 15 yrs ago. Plus no circuit diagrams available. I'm guessing it's a Power Supply issue.