Thanks for your thoughts, Michael. I'm hoping the board is bit less than you are quoting. Desoldering the old encoder chip and soldering in a few dozen 0.5mm(?) connectors sounds like an extreme challenge. Even under a magnifying lens using a super small soldering iron, this will required quite a steady hand. If only I had one of those manufacturing robots :). Just wondering if the old board can be connected to some sort of analyzer to check what this chip is really doing.
Regards,
John
