Power light on then immediately off

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BeagleBone Black

BeagleBone Black is a model of BeagleBoard introduced in 2013

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Techni Plex @techniplex

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发帖于: 2024年5月4日

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Power light on then immediately off

Checking across most capacitors (like C2) reads almost shorted so I assume a component has failed. Short appears across the whole board so I assume a main power rail short and once the power regulator sees the short on the output it shuts down. Anyone have any guesses on which component(s) may have failed. I have 2 BBB with the same exact issue.

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bockring_elec @bockring_elec 声誉积分: 652 17 2 3 · Answer 1 · 2024-09-30T17:02:39-07:00

bockring_elec @bockring_elec

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发帖于: 2024年9月30日

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In my opinion, your BBB may have a broken power management chip or some shorted diodes. If all shorts disappeared after removing power chip, the power management chip must have a problem.

If not, other components(or both them and chip) have problems.

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BeagleBone Black

Power light on then immediately off

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