A friend send me an Irem M72 with the multi M72 installed, having color issues on background and also pixel flickering.
Found a bad solder on multi bottom board
This fixed the flickering pixels.
Looking at the bottom board, I found a lifted pin on the custom KNA91H014
Reflowed it and colors was back
Found a bad solder on multi bottom board
This fixed the flickering pixels.
Looking at the bottom board, I found a lifted pin on the custom KNA91H014
Reflowed it and colors was back
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