Recent content by Technic_Lee

The top PCB is a MAC 600, the bottom is MAC 500. Spot the difference. Is there something all 500 boards have in common and all 600s have in common? I have a box full of them in Unknownn condition. Would it matter if a 500 pcb was put into a 600 fixture to test, and vise versa? Many thanks

I have come across numerous Mac 500 & 600 PCBs in various conditions, many missing their part number sticker. So how do you tell which is which? Is there a noticeable difference? Thank you.