So I picked up a Supermicro four node fat twin.
I brought up one of the nodes just fine with no issues. However, I went to insert a second node and as soon as it made contact it powered up and I smelled the unmistakable smell of burnt electronics.
I pulled out the node and investigated. Eventually, I found that one of the fuses on the front six-drive backplane had popped. It’s labeled F3 and appears to be on the 5V leg of the input. Interestingly, there is a second identical power plug below it and that fuse did NOT blow. I can’t tell if both plugs provide power to the entire backplane or if they each serve three drives. No drives have been inserted yet.
So, I move on to the next node and BAM. Exact same thing. Same fuse. Same spot. Again, all the bays are empty on these nodes.
What’s going on here? As far as I can tell the fuse popping is the only issue. The nodes power up fine and they seem to be okay. I can get into the bios and the IPMI works OK. All the voltages report okay as well.
Something must be making these fuses pop, but I can’t think of what.
I brought up one of the nodes just fine with no issues. However, I went to insert a second node and as soon as it made contact it powered up and I smelled the unmistakable smell of burnt electronics.
I pulled out the node and investigated. Eventually, I found that one of the fuses on the front six-drive backplane had popped. It’s labeled F3 and appears to be on the 5V leg of the input. Interestingly, there is a second identical power plug below it and that fuse did NOT blow. I can’t tell if both plugs provide power to the entire backplane or if they each serve three drives. No drives have been inserted yet.
So, I move on to the next node and BAM. Exact same thing. Same fuse. Same spot. Again, all the bays are empty on these nodes.
What’s going on here? As far as I can tell the fuse popping is the only issue. The nodes power up fine and they seem to be okay. I can get into the bios and the IPMI works OK. All the voltages report okay as well.
Something must be making these fuses pop, but I can’t think of what.