The repair of a Tektronix 3A9 differential amplifier module

This module is part of my Tektronix 564B storage oscilloscope. The scope itself will be repaired in the near future. Mees is pronounced: *maze* **More information and all the design files:** [https://www.meezenest.nl/mees](https://www.meezenest.nl/mees) My Dutch channel: @MeesElektronica **Support my work:** [https://ko-fi.com/meeselectronics](https://ko-fi.com/meeselectronics) Sound effects: [https://bigsoundbank.com](https://bigsoundbank.com) [https://freesound.org/](https://freesound.org/)