1. #1
    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?

  2. #2
    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.
    John S -

  3. #3
    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.

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