[ 1. The PSU fan is not turning.
  2. The +/- 12 Volt lines on the motherboard are not on their own the cause of the PSU fan not running (but could be a second problem - multiple shorted caps).
  3. IBM 5155 with IBM 114 watt power supply. ]



Your computer is an IBM 5155 (Portable PC), with genuine IBM 114 watt power supply.



What Now?


Unfortunately, the IBM 114 watt power supply in the IBM 5155 is difficult to adequately load.
So, what we will do now is some resistance checks.

Click here.