The Sabtronics 2000 DMM was originally a kit form benchtop meter. This unit was built in on of the once-popular TenTec project boxes. I got this from a friend, and set about to repair it.
The DMM was basically functional. The pushbutton switches needed cleaning, it had a bad internal battery pack, the charge regulator had failed, and the front panel needed repair. I eliminated the battery, repaired/modified the charge controller to provide 6vdc to run the DMM from an external supply, repaired the front panel, and calibrated it. Wow, this is a sharp, very accurate DMM with a 10 megOhm input impedance.
Power leads to the main board...
In operation on the bench!
