Do servisu to vubec neposilej, diagnostika stoji 500kc, vymena komponentu 1000kc plus cena nahradniho dilu. Celkove se teda muzes dostat na 4000 az 5000kc
Naleznul jsem nahradni dily, je to jeden z techto tri

The TouchPad spare part kit includes the TouchPad cable.
For use only on HP EliteBook 840 G2 Notebook PC and HP EliteBook 740 G2 Notebook PC
computer models equipped with an NFC module v.1.7 (includes NFC module cable and antenna)
838525-001
For use only on HP EliteBook 840 G2 Notebook PC and HP EliteBook 740 G2 Notebook PC
computer models equipped with an NFC module (includes NFC module cable)
799301-001
For use only on HP EliteBook 840 G2 Notebook PC and HP EliteBook 740 G2 Notebook PC
computer models not equipped with an NFC module
797437-001

https://www.amazon.com/HP-799301-001-TouchPad-module-connector/dp/B01F3BJO1Q
https://icecat.biz/cz/p/hp/797437-001/notebook+spare+parts-5712505477663-797437-001-29209811.html
http://notebookparts.com/genuine-hp-elitebook-840-g2-touchpad-palmrest-797437-001-804336-001/
Objednej si ho a vymeni ti ho kamarad IT-ak