Using a sharp Exacto type knife, cut one of the traces on the pwb that
go to the sounder. Make two cuts 1/16 inch apart on whichever trace
goes only to the sounder, and then use the edge of the blade to lift
the copper trace between the two cuts. But I would really try the
masking tape first as it should do a pretty good job and isherder to
screw up than cutting a wrong trace.

H. R.(Bob) Hofmann