HP 3478A Multimeter Repair and Test
In this video, I repair and test a HP 3478A benchtop multimeter, and show how to replace the memory backup battery without erasing the calibration data. Digikey shopping cart of the parts I used: (These parts can be substituted as needed, no need for these exact parts as long as the capacitance values are the same and voltages are not lower) https://www.digikey.com/short/zndr39
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