Quoted from Aniraf:
TP2 NMI 4.8 Vdc
TP4 BLNK 0 V
TP5 IRQ 4.7 Vdc
TP6 BUS 2.0 Vdc
TP7 RST 0.5 Vdc
TP9 VCC 4.8 Vdc
These were measured after unplugging all of the molex plugs in the yellow circles.
Lastly, I'm going to need some tips on the 5v ripple measurement. I am not certain where to get that for you.
Good job on the measurements.
Your 5V is low consistently, so now you need to check it on the power supply board itself.
If you have 4.8 on the MPU, and 5.2 on the power supply, then you know your female connectors need re-pinning.
If you have 4.8 on the MPU and 4.8 on the power supply, then you know the power board needs fixin'
(if you want to check AC Ripple, turn your meter to AC and test the 5v again)