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 with the covers off. So likely to be some sort of thermal issue as suspected.
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 with the covers off. So likely to be some sort of thermal issue as suspected.
Forum HERE
from EEVblog - The Electronics Engineering Video Blog http://ift.tt/1MPCTQq
via Yuichun
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