Compaq 200 Watt Power Supply Deskpro EN & AP 240 - Refurbished - 334112-001

hi when we last left our intrepid adventurer he was uh caught up with this ibm compatible the world's first ibm compatible compact portable machine from the early 80s and managed to get the motherboard up and working and determined that the power supply was a shot we weren't getting any negative rails whatsoever which actually stopped the main processor from booting up because there is a logic output from this uh comparator circuit around here that obviously uh checks the rails on all the voltages there's plus 12 there's five there's minus 12 and minus five at least i think and they're all obviously sum together and gives a signal good output and it was given a signal bad output and that was going to the cpu holding in reset stopping the machine from starting him up but once we powered the motherboard up with an external uh power supply and bodged in that power good signal the motherboa