https://devzone.nordicsemi.com/f/nordic-q-a/127911/nrf9151-dk-no-longer-powers-up-properly-no-j-link-com-msd-vdd-and-vdd_gpio-only-0-6-vHello, my nRF9151 DK appears to be damaged or has a power-path failure. Current symptoms: No LEDs light up No J-Link is detected No COM port appears No mass storage device appears Windows does not show a usable device anymore Whaten-USTelligent Community 13Fri, 24 Apr 2026 17:39:56 GMThttps://devzone.nordicsemi.com/thread/565476?ContentTypeID=1Fri, 24 Apr 2026 17:39:56 GMT137ad170-7792-4731-bb38-c0d22fbe4515:fcc4dd56-13b6-4057-93d0-f588ee6594f0Nishant Gaurav<p>Hi J D</p> <p><span>The pattern &mdash; 5 V input healthy, but regulated output rails (VDD, VDD_GPIO) collapsed to ~0.6 V, no LEDs, no USB enumeration, no J-Link &mdash; is consistent with a&nbsp;</span><strong>hardware failure in the power management path</strong><span>&nbsp;(nPM1300 PMIC or associated circuitry). A similar scenario was reported when back-powering from an external 3.3 V source damaged the DK&#39;s on-board regulator or protection circuitry. [</span><a class="mantine-focus-auto m_849cf0da m_b6d8b162 mantine-Text-root mantine-Anchor-root" href="https://devzone.nordicsemi.com/f/nordic-q-a/125069/request-for-repair-or-support-damaged-nrf9151-dk-board-power-failure" rel="noopener noreferrer" target="_blank" data-underline="hover">Power failure report</a><span>]</span></p> <p><span>Thnaks &amp; Regards&nbsp;</span></p> <p><span>Nishant</span></p><div style="clear:both;"></div>