Then we recombine the signal board with the logic board in a direct way. Put the signal board on the 160 °C Heating Platform to heat. Apply some Paste Flux to the bonding pad. Put the logic board in position. Press gently with tweezers during heating. After about a minute, remove the motherboard.

Measure pin 21 of the connector after the motherboard has cooled. The value of resistance returns to normal. Install the motherboard to test. The touch screen works well.