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see discussion in threadsuspect 12V-5V & around here
best theory is low esr caps causes overvolt which explains high side fet failling short failure mode.
- 12V->5V @ 3A Buck Converter Board is the culprit
, possibly soft start is too fast?
RCA Analysis
- https://www.google.com/url?q=https://uwarg-docs.atlassian.net/wiki/spaces/Meetings/pages/2567307417/2024-06-08%2BInput%2BFilter%2BIntroduction&sa=D&source=calendar&usd=2&usg=AOvVaw1YKkkEw9OQrw24geO87TLv