Ok looking at the video that is EXACTLY what I see, so I'm guessing 10Hz not 50Hz :)
As I mentioned the board does have a fair amount of trace corrosion so with that info to hand I'll spend some time clearing out and re-flowing all the joints around the psu section of the board.
I've only run the Mac for shortish periods, up to 5 mins, so as not to stress an already flaky, or should that be wobbly, board.
What I can say is that at no time does the behaviour change during operation.
I do have access to a scope yes.
Thanks for the link, I will read it now.
Hi Folks,
First post :) I'm no electronic engineer, only a keen hack, so I apologies in advance if I ask or say something stupid.
I'm having a problem with a 240v international AB Mac Plus and need some help/advice. When I first got hold of the machine it had no keyboard / mouse meaning other...