There are several topics similar to this, but non of which are for the Pironman 5 or have the same symptoms. Im using a Pi5 with the latest official Pi OS. Everything works great except the OLED screen. It will show info on bootup for several seconds and then change to say “power off”. I have taken this thing apart several times to reseat and verify connections. I have the official Pi 27 watt power supply. Also tried a few others. Its only drawing around 1 amp at most during boot and idle, so I assume its not the power supply. Any ideas before I send this back?
Yes, I have followed that guide. I also tried reimaging the SD with a fresh OS and reinstalling the pironman packages. Its a real noodle scratcher. Anytime I change the pironman settings or restart pironman it will display correctly for several seconds and go back to displaying “power off”. At this point I dont believe it is a power issue. I also do not think its a software issue. I have reseated and verified physical connections which leads me to believe it is a hardware issue. This is a brand new Pi5 as well. Could it possibly be an issue with the Pi itself?
When the OLED show “power off”, does Pi really shutdown or work normally? Have you update the kernel? sudo rpi-update. All updates are done? sudo apt-get update && sudo apt full-upgrade and reboot and see if it fix the issue.
Also you can try this sudo i2cdetect -y 1
And check if i2c is able
Can you take a picture of log file? cat /opt/pironman5/log
After updating the kernel and reboot, I reinstalled pironman and everything works. Not sure why I didnt try that before… rookie mistake 
Thanks for your help Weirdyguy!
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I’m so glad for you. I wasn’t at 100%. When you have any issue it’s good to check if every updates are done.
If you have any questions, feel free! 
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Mataduino, have your current issues been resolved?
From the video and text description you provided, are you sure you have installed the correct pironman5 software, and not the pironman software? The pironman software is compatible with the Pi 4 case, while the pironman5 software is specifically for the Pi 5.
https://docs.sunfounder.com/projects/pironman5/en/latest/set_up/set_up_rpi_os.html
You can also provide us with screenshots of the installation process to help us check if the correct software was installed.
