> > Some great ideas Peter, thanks! I will double check the scope, I wonder if mine > doesn't have the bandwidth to show a glitch that is occurring? I will consider > cutting the track, which is also a great idea. I really do have to hope that it isn't > the gate array, it is my last resort, although that was closer to the leakage > damage than the 74LS126. >
I was out most of this evening, but I just had a quick look again and think I have found something significant. Comparing the gate array pins on the two boards I have, I see that on the board where the video is corrupted, there are two pins that appear connected to 0V that are not connected to 0V on the spare motherboard. I have yet to attempt to trace the connections to these pins, I will do that tomorrow as it is late here now, but I suspect it does not bode well for the gate array :-( Regards Rob
