Black screen CPC464 seems to be failing more as i diagnose it

[ClintonGoodfellow]

Hi,

I'm getting a stable 16mhz on pin2 of ic125, i can see this on pin 8 of the unpopulated socket for the 40007, but im reading nothing from pin 40? is my gate array faulty?

I will note that the pio is very hot to touch if the machine is powered for a while, the vdu not as hot but still toasty, the cpu is warm and the GA is stone cold.