i try to summarise
i have activy led for both usb
i can't boot any os from both usb
ssd not seen (even with another ssd)
if i go in recovery, as soon as i insert wifi passord, mac hangs and reboot
ic camera was 100% resoldered (i don't know why)
usb ports were 100% resoldered (i don't know why)
i'm pretty sure that cd3215 were changed (they have different serials)
i think i can't boot in safe mode because ssd is not seen
i'm pretty sure that usb and ssd not seen is...
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[help] 820-00840: no ssd, no usb, wifi froze
i don't know the history of this board…I'm pretty sure that u3900 was touched/changed (i don't know why)
Motherboard boot with “no disk error.”
Tried another disk, same error!
It can't see usb bootable from both usb
USB stick light stay on fixed
As soon as i try to boot in Recovery and write the password, it hangs, and then reboot
any help?
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Lenovo Thinkbook 14 g2 ITL: power on only with novo button
I've discovered that when i plug battery or power supply, i have not 3,3v on power button....
if i click on NOVO button, notebook starts without problem....and 3,3 appears on power button!
how can i fix it??
i would like to flash bios, but inside the pc, there is an account with no priviledges to execute programs..
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SMC_RESET_L : 3.4V
SMC_WAKE_L : 3 V
SMC_CLK32K : 0V
SMC_EXTAL : 0V
SMC_XTAL : 0.4V
PP3V3_S5_SMC_VDDA : 3.4 V
PP1V2_S5_SMC_VDDC : 0,9V
PP3V3_S5_AVREF_SMC : 3.28V
GND_SMC_AVSS : 0V
SMC_TCK : 3.4V
SMC_TMS : 3.4V
SMC_TDO : 3.4V
SMC_TDI : 3.4V
i'm thinking that this smc is not good (i've bought for new)
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i will go crazy...i've soldered another smc..now i have 3,2 on the other side of r8141 but no power led on magsafe... i have even pwrbtn_l 3,4V!!!!!
ppbus_g3h is 8,16, PP3V3_S5_SMC_VDDA 3,4 sysonewire 3v (should be 3,4?!) PP1V2_S5_SMC_VDD 0,9 v!?!?!?!? should be 1,2? (line is not shorted)
Last edited by phantomEVO; 03-07-2024, 03:00 PM.
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my first check is for voltages: if not present, i search for shorts (beep mode or diode mode)
0v on PM_DSW_PWRGD
SMC_S5_PWRGD_VIN 3,3v
S5_PWRGD not present
0v on PP3V3_SUS
0,3v on PM_PWRBTN_L
ALL THOSE MEASUREMENTS ARE IN DC MODE
I'm understanding ONLY NOW that you don't mean DIODE mode when you say "measure voltage to ground"
so i have 3,3V on on side of r1405, and 0,3v on the other side!
[B]SMC_ONOFF_L[/B]. 3,4v
[B]SMC_RESET_L[/B] 3,2vmy first check is for voltages: if notLast edited by phantomEVO; 03-06-2024, 08:31 AM.
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PM_PWRBTN_L 10k
r1405 is 1k, 0,330 voltage to ground
[B]SMC_ONOFF_L[/B].0,600
[B]SMC_RESET_L[/B].0,500PM_PWRBTN_L 10k
r1405 is 1k, 0,330 voltage to ground
[B]SMC_ONOFF_L[/B].0,600
[B]SMC_RESET_L[/B].0,500PM_PWRBTN_L 10k
r1405 is 1k, 0,330 voltage to ground
[B]SMC_ONOFF_L[/B].0,600
[B]SMC_RESET_L[/B].0,500PM_PWRBTN_L 10k
r1405 is 1k, 0,330 voltage to ground
[B]SMC_ONOFF_L[/B].0,600
[B]SMC_RESET_L[/B].0,500PM_PWRBTN_L 10k
r1405 is
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