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Repairs

Product repairs

EEVblog #803 – HP1740A Analog Oscilloscope

Dave saved this classic from the dumpster, a HP 1740A 100MHz dual channel analog oscillocope from the mid 1970’s. It wasn’t supposed to be working so this is a look at the problem, a mini teardown, and some basic PSU troubleshooting. Update: Even after 4 hours it still doesn’t fail …

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