OK, thanks for correcting me.
I unsoldered that ground link you circled, plugged P1445 back in, PDA lead still unplugged.
I still get nothing on screen, and the reading at TP1423 is still low... It seems as I hold the positive lead of my meter on to TP1423 that the reading fluctuates.. starting around -100V then gradually climbing... up to about -160V last I checked, as though some capacitor is charging? After about 30 minutes it seemed to have stabilized at about -102V. I also notice that one of the neon lights nearby flashes on briefly when I first touch the TP1423 with the meter lead.
