nRF54LM20-DK no LED power

Question

It seems like the nRF54LM20-DK is not properly powering LED 0-3. After measuring 0V from TP1 to GND, I opened the board configurator and tried applying "ledcontrol" as both off and on, and either way I'm getting no power. Any insight here would be appreciated! 
 
 PCA10184 
 DK Hardware Revision: 0.3.4 
 Board Controller FW version: 1.2.1 
 
 # nRFConnect System Report - 2025-10-19T21-06-18.849Z 
 - App: Board Configurator - Version: 0.5.0 - Source: official - Core version: 5.2.0 - Engine version: >=5.2.0 - System: Apple Inc. MacBookPro18,1 - BIOS: Apple Inc. 13822.1.2 - CPU: 1 x Apple M1 Pro 2.4 GHz 10 cores (10 physical) - Memory: 73.2 MB free of 16 GB total - Filesystem: /dev/disk3s1s1 (APFS) 460.4 GB 19.6% used 
 - OS: macOS (26.0) darwin arm64 
 - Versions - kernel: 25.0.0 - git: 2.39.5 - node: - python: - python3: 3.9.6 - nrfutil-nrfutil-device: 2.12.3 - Connected devices: - 001051856418 PCA10184: /dev/tty.usbmodem0010518564181, /dev/tty.usbmodem0010518564183 
 - Current device: - name: nRF54LM20 DK - serialNumber: 001051856418 - cores: 1 - website:

cheeric · Accepted Answer

I also ran into this issue with my nRF54LM20 DK rev 0.3.4. 
 I believe the reason the LEDs are not getting 5V power is because the nPM1300 default VDDIO (nPM VOUT1) and VDD_DRBG (nPM VOUT2) is configured to 3000mV by default out of the box: 
 Because nPM1300's VDDIO uses this VDD:nRF_PMIC voltage, the LED_PWR_CTRL (which is ~1.8V) from the debugger MCU is not able to assert HI and turn on the load switch output LSOUT2. 
 If I change the VDDIO (nPM VOUT1) and VDD_DRBG (nPM VOUT2) configuration to 1800mV or any value that satisfies , then the LSOUT2 turns on, P5V0:LED gets voltage, and LEDs turn on.

nRF54LM20-DK no LED power

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