Keithley 2602 SMU: repair, easter egg
This 2602 Sourcemeter was defective with both channels showing Overflow. Beyond the repair, a look at the rest of the internals, and some surprises in the firmware. Detailed writeup on https://qcte.ca/testeq/k2600/k2600/ 00:00 intro and symptoms 03:24 factory bodge ? 04:22 homecooked bodge 05:42 just fans 06:24 dump all the things 08:03 easter egg
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