| | 4 | == DEC 12 == |
| | 5 | * Temporarily swapped two known good motherboards into the chassis for ippc11 and ippc12. They both worked fine, so this indicates that the motherboards in ippc11 and ippc12 are both broken. Perhaps the CPU's and RAM are okay, but we'll need a known good LGA771 motherboard to test them with. |
| | 6 | == DEC 8 == |
| | 7 | * Swapped the RAM between ipp065, ipp066, and ipp063. ipp065 and ipp066 either sometimes or always indicated only 40GB, instead of 48GB. When we moved the RAM between the different machines, the good RAM from ipp063 always worked, the bad RAM always failed, and the inconsistent RAM continued to behave inconsistently, so the problem is that we have at least two bad sticks of RAM -- one which always fails and one which fails intermittently. |
| | 8 | == DEC 7 == |
| | 9 | * Tested the power supplies on ippc11 and ippc12. ippc11's power supply's -12v line wasn't working. ippc12's power supply produces the right voltages, but the exit fan doesn't spin, which decreases the airflow to about 25% of what it should be. Found a spare power supply for ippc11. Replaced the motherboard in ippc11, but the "new" motherboard doesn't work. |
