820-00928 one of the 4 usb-c no 5v

Roshon

Member
on the 3 usb c i get 5.1v .33A NO 20V
PP3V3_G3H 2.5V
U3100
PP3V3_UPC_XA_LDO 1.8V
U3200
PP3V3_UPC_XB_LDO 3.3V WHEN I USE IT WITH POWER CORD WHEN IDO'T 2.5V THE SAME ON UB400 AND UB300
 

Roshon

Member
u3100
PP1V8_UPC_XA_LDOD 0.015
PP3V3_UPC_XA_LDO 0.004
U3200
PP1V8_UPC_XB_LDOD 0.450
PP3V3_UPC_XB_LDO 0.470
UB300
PP1V8_UPC_TA_LDOD 0.454
PP3V3_UPC_TA_LDO 0.477
UB400
PP1V8_UPC_TB_LDOD 0.454
PP3V3_UPC_TA_LDO 0.470
 

Roshon

Member
820-00928 power on with charger wire power button not responding
Will turn on with charger and battery connected, will run off battery or charger it charges battery however when press power button it will not shut off i tried different button
if i close lid and open screen does not come back on but keyboard is lit up
 

Roshon

Member
No reaction even if i press power button 5s
smc_lid is 3.3v open and 0v close the fans stop after i close and start when i open no screen turns on
 

Roshon

Member
screen come on but no back light the battery says service so im going to try another screen and battery but no power button
 

2informaticos

Administrator
Staff member
What about SMC_LID_LEFT/RIGHT signals?
Just one high is good enough for U5255, but SMC receives the 3 signals.

If SMC_ONOFF_L stays low 4s, SMC should turn off the machine.
 

Roshon

Member
i tried 3 screens they light up when i close the lid and open i can see video but no back light the video works on external monitor
 
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