Good day everyone,

I am busy repairing a Williams Cyclone. On the display, and randomly during startup, half of the display (displays 3 and 4) do not work 100%. A restart of the machine usually fixes it for 1-2 startups, sometimes it's fine for 5-6 startups then the problem occurs for 1-3 times, and back to working for a few startups. I have attached pictures. I have narrowed it down to the display/display board. If I swap out the display with displays from other Williams machines, it's fine. wherever I move that board to, it has the issue. I've retouched all the solder joints to no avail. Any advice would be great.

Thanks!

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WhatsApp Image 2021-01-16 at 14.59.15 (resized).jpeg

Out of interest for future readers, it was the UDN6118A IC on the display board.