Model Hitachi 50CX29B

Having problem with the blue convergence . Convergence is bad on the blue
only . I had changed the convergence IC (STK... ) , same problem.

Nobody touched the adjustement on the analog adjustment board so I don't
think it's an adjustment issue.

Only thing is 2 wires on a cable from the adjustment board and the main
board near the STK got cut but was replaced on the same way after but maybe
user mix up the 2 cables before and try. I don't know what are these 2 wires
for , I will need the schematic. Anyway , on one or the other way , the
symptom is the same.

Any idea ??

Tks...