Webpages for some older Berning products are publicly available below. Owners Manuals and Schematics are also available to help those qualified to do repairs.
All David Berning Company products contain voltages that can be lethal, and repairs should only be attempted by persons familiar with special precautions required for working on high-voltage circuits. Most David Berning Company products use switching power supplies, and only fast recovery rectifiers should be used. Products that use switching power supplies can not be brought up in voltage slowly with a variac. Many of the components on switchers are not isolated from the line and some measurements require the use of an isolation transformer.
