I collected this probe power supply waiting for use in one day. Recently I have more time at home and thus opens up if any thing need maintain inside. It ends up i recalculate the supply voltages to within spec after cleaning. There is no line filter capacitor inside and thus no risk of leaking due to aging of RIFA capacitors!
June 24, 2021
hp 1143A Probe Power supply inside photos and calibration
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