7A11/Repairs: Revision history

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13 July 2024

  • curprev 09:2809:28, 13 July 2024‎ Peter talk contribs‎ 466 bytes +466‎ Created page with "Symptom: Readout always displays IDENTIFY. Key in the probe is OK as checked with an ohmmeter. Problem: No contact on NC side of the microswitch behind the position control. Solution: As it is not practical to get contact cleaner into the switch, I disconnected the switch and exercised it a few times while connected across a lab PSU set to 20 V, 0.5 A to burn off the oxide layers. --~~~~"
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