Lenovo G460e FAULT: TP does not work DESCRIPTION: The keyboard connector and the touchpad interface have both been eroded by an unknown liquid !Two capacitors connected to the touch panel have been completely corroded !
MAINTENANCE RECORDS: Customer has recently replaced the KB by himself !
REPAIR PROCESS: Firstly, I cleaned the both places with banana water very carefully ! Secondly, I measured one pin of the touchpad interface with my multimeter , Unexpectedly ,the voltage of the pin was only 2.86v !
Thirdly, I measured the voltage of the related pull-up resistor next to EC,found that,The multimeter showed the number of 5.03V!
Finally,connected the pull-up resistor to the related point without normal voltage on the touchpad with one Copper wire ,In addition, cut the wire that from the point to the anormal pin !
That's all ! Thank you for watching........ The end