Скачать или смотреть Using The Minipro to identify a faulty IC on a Retro Fruit Machine Circuit Board

***Please Read The Description***

So, I am terrible at explaining things at the best of times but U14 (74541) which sits right between two of the sockets and drives the reel optos is acting very suspiciously.

Pins 17 and 18 are misbehaving with the logic probe and I have taken it out to investigate whether it is faulty or U5 the 68681 is driving it and that is causing the fault. Obviously, because I am not ‪@TheMadmagik‬ and cannot explain myself as well as he can, I don't explain the pin numbers in the video like he does, but this is how my brain works and I can't help that! I rarely say the pin numbers correctly (ask Magik) but I can usually get the job done, well with a little help from my good friend The Minipro".

Enjoy