I’m writing to ask for your help because my Nabu is acting strangely, and I can’t figure out what’s wrong. I’ve searched all available resources online, and you are my last hope.
Here’s the issue: right after powering it on, the machine gets stuck in a strange loop - some sort of test, I think. It displays columns of numbers, makes beeping sounds, and repeats this process for several minutes.
Sometimes it takes 5 minutes, other times even 10. A reset doesn’t help; the loop continues. Eventually, the numbers change to those shown in the second photo,
And if I reset the machine at that point, it boots up normally and works perfectly fine. When I turn it off and back on again, it starts up without any issues. However, if I leave it turned off for a while, the problem reappears. The adapter itself works fine - once the device finally boots up, everything runs smoothly. Besides, this loop occurs regardless of whether the adapter is connected or not.
At first, I thought the issue was with the fan because it was stuck. Using information I found online, I managed to fix it by adjusting its position with screws on the back panel. Unfortunately, the long boot issue hasn’t disappeared. I tried reseating all the chips in their sockets and checked to see if anything looks visually suspicious. At first glance, everything seems fine, but I’m no electronics expert, so I might be wrong. I noticed that the graphics chip gets quite warm, though not to the point of burning. Right next to the graphics chip, there’s a large resistor that gets very hot. I’m not sure if that’s normal.
And today, it doesn’t want to start at all. It got stuck in the initial loop, and I think this might be the end of the road...
Do you have any ideas about what might be causing this strange behavior?
Any suggestions on how to bring my NABU back to life?
I’d greatly appreciate any tips!
