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Hi hisimomo,
It sounds like some traces on your DZ60 PCB might have been lifted or damaged during soldering, which is why row 3 isn’t working. Using Milmax pins alone won’t repair broken circuits—it just provides better switch connections if the pads are intact.
To fix damaged traces, people usually use one of these methods:
Wire bridges: Solder tiny wires to reconnect broken traces. You’ll need a multimeter to trace the connections and ensure continuity.
Conductive paint or pen: For small breaks, a conductive pen can restore the connection.
Replace the PCB (last resort): If too many traces are damaged, it might be easier to get a new PCB.
Regarding the DZ60 map: it shows which pins connect to each row and column. You don’t need to fully read it—you just need to identify where the broken trace runs and bridge it manually.
If you want, I can explain step by step how to check and bridge a broken row safely.