Fruit Machine Chat

Had a replacement main board after the original failed with a critical memory error. New board gives a 0.1 PAY ALM which I can clear on the error log but returns when initialised. Happy connections are ok as the old board was photographed prior to removal. Any ideas and suggestions would be most welcome.

Managed to get my machine sorted without further assistance. Went round the board and plug connections with a soldering iron and some electrical cleaner. Thankfully got lucky although I couldn't pin the cause to anything specific.