I believe U33 runs the columns, I tested the rows chip (U47) while the unit was powered and it registers the rows in the chip, the columns don't do anything, the logic chips for it tests okay, but I noticed there's no enable signal, so gotta dig backwards more. Also back to weird voltages again on Q4 area, around 3.8v. I really need to figure out what the original transistor types were for Q1-Q4 are
