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TBS 1202C Oscilloscope freezing

Model: TBS1202C | Subject: Troubleshooting | Published: October 2026 | FAQ ID: KB-01129
Q: I have an TBS1202C oscilloscope that I bought new in 2022. It runs firmware 1.29.30. FPGA Version: v20.78. Front Panel Version v5.
The oscilloscope freezes when the horizontal scan knob is rotated. After a few minutes, it reboots itself by watchdog.
Has anybody encountered these symptoms? Any idea what the causes are, and how the scope could be fixed? Thanks!