We were called to a hotel that had problems with their order printers in their kitchens. They would work some days and not the next.
So we tested the CAT5 cables to see if there were problems with the wiring …
We’re not entirely sure how this network socket ever worked! The video above shows that whilst two of the four pairs were wired correctly, one was wired back-to-front and another wasn’t connected at all!
We re-wired the RJ45 sockets and all was well.