[noleex]

I already started a thread in the beginner section with an very similar issue. Today another O2 received that isn’t booting or showing anything, only solid red LED.

I found out that that means the CPU unit needs to be replaced or reseated.

I tried that several times to reposition the CPU unit and also tried another fully 100% working CPU Unit on this motherboard, but the unit still shows red LED no booting no nothing (black screen).

What I also tried is to put this motherboard into another working O2, also this shows only a solid red light by using this motherboard. I want to make sure to test out everything and used a working motherboard and but it into the not working O2 I received today, that worked at the first time, means the Backplane and PSU is OK. Also tried to swap the Rams between the motherboards just to make sure everything was testet. Also swapped the processors between the motherboards and they where all working on the other working motherboard.

In fact that means PSU, Backplane, RAM and Processor is working, so the issue is with the motherboard itself.

Is there anybody experienced with this issue or may know how to fix or repair these motherboards, I have two, not working motherboards, and I guess both has the same issue.

Thanks