@HagssFIN
Okay, so based on your posts and the CGMiner API log,
- PMU (power management unit) board is ok based on the CGMiner API log and green LED indicators.
- AvalonMiner LED indicator goes red.
- AUC3 converter LED indicator goes red.
Hash boards do not start hashing and all values are shown as zero.
But I find it hard to believe that both 2 of 4 hash boards you are powering are completely dead.
Based on the weird hash board values and what I've repaired earlier, I'm estimating that you have a faulty control board (MM board).
Thank you for looking,
What is the control board (MM Board), is that the one connected to the ACU or the one connected to the hashboard?
I opened up Avalon to get into the circuit board with the burnt molex connected to it, I also removed it with the advice of BadgerHobbs. I tested it again and still the same result ( 0 GHsav and the fan starting and stopping a few seconds)
One more advice by BadgerHobbs is to update the firmware, I will try it later.