Troubleshooting • RPi4 Won't Boot

Hi,

Recently I ordered a Raspberry Pi 4 Model B (2GB RAM). It arrived on the 23rd and yesterday I attempted to boot it up for the first time.

I plugged in a 64 GB microSD card which I had flashed the most recent OS onto using Raspberry Pi Imager. I noticed that both the ACT and PWR LEDs are both on permanently, while I would usually expect some blinking from the ACT LED while it loads the OS from the microSD. I cannot seem to get it to boot, so I'm here attempting to troubleshoot. I'll explain my situation and what I've tried.

I have looked at the large boot sticky, along with other methods and so far I have tried the following with no success.

• I am using the official Raspberry Pi power supply from the recommended reseller (RaspberryPi.dk) -- to be precise this one: (https://raspberrypi.dk/en/product/raspb ... -3a-black/).
• I do not have a monitor to output to unfortunately -- only a laptop. With my other RPi4, I use PuTTy to SSH into it headless. However I can't SSH into this one because it doesn't appear to be booting.
• I haven't gotten this to successfully boot once yet.
• I learned from another poster that RPis cannot boot from a 64 GB microSD card directly, so I followed a tutorial to convert the 64 GB microSD to FAT32 - this didn't work.
• My thought was then that maybe I had somehow corrupted the 64 GB microSD card in the process, so I'll just start clean and go out and purchase a 32 GB microSD instead (which is what I used in my other RPi4) -- unfortunately it still doesn't boot from this.
• Both of these microSD cards are new from the store.
• I read on the large sticky that, on RPi4s, if both lights are solid it can indicate an issue with the EEPROM -- so I used Raspberry Pi Imager to put the SD Card Boot onto a microSD and tried booting the RPi4 with that -- no luck with either microSD.
• I read that one of the main diagnostic actions you can do is to check that the 5V GPIO pins are 5V, and the 3.3V GPIO pins are 3.3V. The 5V GPIO pins (measured with a multimeter, against GND, GPIO pin 6) produces a voltage reading of 5.2 - 5.4 V which is what one would expect.
• However, when doing the same measurement (between pin 1 -> 6, or 17 -> 6), the 3.3V pins are registering as 4.78 V.

I have contacted the supplier of the board (RaspberryPi.dk) and asked to move forward with potentially getting it replaced as they offer a 14 day guarantee, but in the meantime while I wait for their response - can anyone suggest something obvious that I've missed in attempting to get this board to work?

Kind Regards,

Tom

Statistics: Posted by Tom C — Fri Apr 26, 2024 9:42 pm — Replies 1 — Views 43

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