Data Precision model 1450 4½ digit DMM voltmeter 1978 test teardown
20:57
Bang and Olufsen AC Voltmeter RV9A 10Hz-10MHz 1977 teardown repair
26:50
Sennheiser UPM 550 universal pegelmessgerät 10Hz 1MHz teardown
15:39
TESTING A 1903 VOLTMETER
33:58
Every Component of a Linear Power Supply Explained (while building one)
1:01:12
DG’s Practical Notes, R#21 Grundig Heinzelmann 1, 1954 [v2]
45:22
#21 - Analogue vectorscope repair (Philips PM5567)
19:16
LEADER LDC-822A Digital Counter 80MHz 1981 test teardown
50:19