TNP #23 – Teardown, Repair & Analysis of a Tektronix THDP0200 ±1.5kV High Voltage Differential Probe

In this episode Shahriar repair a Tektronix high voltage probe. The probe is incorrectly identified when plugged into a TekVPI interface and causes the scope to freeze and fail communication with the probe firmware.
With the help of the firmware of the probe is compared with a known good probe.

The probe contains two different microprocessors to handle various probe functions and configurations. The new EEPROM content corrects the problem and points to some interesting conclusions on how the probe is identified by the scope. Measurements confirm the probe is now functional.​​​

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