820 3115 cursor doesn't move but clicking works

[funtotos]

hey

820 3115 cursor doesn't move but clicking works :

PP3V3_S4_TPAD 3.32v
PP18V5_Z2 0v
PP5V_S5_CUMULUS 0v

thks

 

[Repairable]

any history? liquid damage

 

[dukefawks]

5V_S5_CUMULUS should be present and comes from PP5V_S5_LDO, is that one present?

 

[funtotos]

5V_S5_CUMULUS = 0v
PP5V_S5_LDO = 5.12v

L5800, C5800, R5805 = 0v

U7801, C7801, U7200, C7273, Q7840, C7841, R7842 = 5.12v

L5800, C5800 = No components

thanks

 

[dukefawks]

Oh yeah L5800 is not mounted so no voltage there. Have you tried a known good trackpad?

 

[funtotos]

yes, i have good trackpad

 

[dukefawks]

Did you measure 18V5 with the trackpad plugged in? Did you swap the complete trackpad with cable for a known good one?