![pi 3b+ - Pi 3 Model B+ has steady red PWR LED but no green ACT LED with 2018-03-13-raspbian-stretch.img - Raspberry Pi Stack Exchange pi 3b+ - Pi 3 Model B+ has steady red PWR LED but no green ACT LED with 2018-03-13-raspbian-stretch.img - Raspberry Pi Stack Exchange](https://i.stack.imgur.com/cuukk.jpg)
pi 3b+ - Pi 3 Model B+ has steady red PWR LED but no green ACT LED with 2018-03-13-raspbian-stretch.img - Raspberry Pi Stack Exchange
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RPi 3b doesn't boot from sd card. Without sd card, both ethernet light up, even with sd card inserted too. ACT led wont light up. 3.3v rail works. : r/RASPBERRY_PI_PROJECTS
![Raspberry Pi 4 Model B GPIO Extenstion Board Switch Cooling Fan HAT with Blue LED Single Dual Fan for Raspberry Pi 4B 3B+ 3B - AliExpress Raspberry Pi 4 Model B GPIO Extenstion Board Switch Cooling Fan HAT with Blue LED Single Dual Fan for Raspberry Pi 4B 3B+ 3B - AliExpress](https://ae01.alicdn.com/kf/Sc8875c2d1ae7468baf70f9af2b145b45j.jpg_640x640Q90.jpg_.webp)