So I have a NEC Prospeed 386sx, and want to get it back up and running. However, it doesn't turn on, the AC adapter is toast and needs a replacement, and I want to open it up to make sure the CMOS battery hasn't burst or a capacitor hasn't failed. A service manual for the 286 prospeed might work, as they seem pretty similar. Also, the 386 model is different from the 386sx/286 model, so keep that in mind.