I repaired the third today with the same error. The problem always was at the end of the flexi PCB of the touch layer: a very small burn or deficiency on one of five or six wire ends (in the middle, maybe the third wire as I remember) where the connector's blade lock on it. Sometimes enough if I cut off from the PCB's end cca. 2-3mm. It's straight and remain long enough for the connection. If not, must be wiring. After that, a hard reset necessary or the touch controller will remain off.
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