Hold a heatgun at one centimeter from one of the flexible ribbons, using your non-dominant hand, moving slightly to cover the whole thing, or staying still if using a flat nozzle. Set to 300 ° C and fire for one minute.

Turn off and move the heat gun away, then using your dominant hand, firmly press a plastic spudger or guitar pick against the ribbon cable, running it from one direction to another, at least twice.

Repeat process with all ribbon cables.