I have recently bought a raspberry pi 4 (4gb version) and its' original power adapter. I used balena etcher to flash my sd card, which I have used in my previous raspberries and works properly, but it does not send any signal to the micro HDMI cable I use.

I use a micro HDMI to HDMI adapter and all the equipment is brand new.

Could this be a faulty raspberry pi or am I doing something wrong?

  • This may or may not be relevant, which is why I'm writing a comment rather than an answer. I had exactly the same problem, and it turned out that when I formatted the SD card on Windows using FAT32, it formatted it as exFAT32, because of the large (64GB) SD card size, so the pi couldn't boot from it. I reformatted it using a program called fat32format, and it's booting up fine now. – BZ1 Aug 13 '19 at 3:32
  • can you confirm that the Pi is booting (i.e. ssh into it) - could be as simple as bad power supply so the pi isn't even booting (yes, I know you bought a pi 4 power brick, but, lets do some diagnostic work) – Jaromanda X Aug 13 '19 at 9:21
  • @JaromandaX I have tried to ssh to it. But it is not discoverable and probably has not even got an IP to ssh to. (I have scanned the lan with nmap and did not find the pi). The sd card is flashed with the latest version of Raspbian and has not been configured to run ssh service at start (I think it is disabled by default and I have to enable it form rpi_config). – George Sp Aug 13 '19 at 10:26
  • @BZ1 I did not know that. I will try it and report the results. Just to be clear, you mean to format to FAT32 the sd card and then flash it again, right? – George Sp Aug 13 '19 at 10:28
  • @George_Sp Yes. Formatting will obviously remove any data, so you will need to put it back on. I'm not familiar with balena etcher, so I don't know whether it alters the type of filesystem. I was using NOOBS and just copied the data directly onto the card, so whatever filesystem it was formatted as remained the same. Here is the program I used to format it as fat32: ridgecrop.demon.co.uk/guiformat.exe Although Windows will automatically format as exFAT32 when you select FAT32, it displays the correct filesystem when you check afterwards, so you can confirm that it's the correct one. – BZ1 Aug 13 '19 at 19:19

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