Re: Lenovo S230U does not power on.
thank you all for the reply.
i check some voltage like @piernov said and i found this
SYS_PWROK = 3,2V when i press the power else it is 0v
PCH_PWROK =3,2V when i press the power else it is 0v
VCCSA = VCCIO = 1,05 V when i press the power else it is 0v
H_CPUPWRGD = 0 V when i press the power it is still 0 V and is not shorted
look at this video: [url]https://youtu.be/sG1rC-Rfsl8[/url]Re: Lenovo S230U does not power on.<...e reply.<br />
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Re: Lenovo S230U does not power on.
hey
I read on internet that one of the Bios-chip must have Voltage on the Pin 3 and 8 when i only plug in the charger but dont power the Board. is it true?
in this case with BIOS-chip must have the Voltage before i power the board?
thanks
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Re: Lenovo S230U does not power on.
hey i disconect PL1001 and PL1004 and check the values of resistances.
for PL1001
on the Mosfet site i have 2 kohm and the oder site 4 ohm
for PL1004
on the Mosfet site i have 2 kohm and the oder site 2,3 ohm
on PU901 i get
Pin 24 = 4ohm
Pin 32 = 2kohm
Pin 33 = 2kohm
Pin 34 = 110kohm
Pin 41 = 110kohm
Pin 42 = 2kohm
Pin 43 = 68kohm
Pin 49 = 2,4ohm
when i press the power and check...
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Re: Lenovo S230U does not power on.
hello Weelcup,
i did not flash the Bios.
how can i check it using the mutimeter?
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Re: Lenovo S230U does not power on.
hello,
thank you a lot for the reply,
i check PQ1001 to PQ1006 but i did not found any short.
here are the resistence values of the Pins with respect to Ground
the values in the parenthesis are the Voltages:
( When i plug in the charger / when i press the power button )
PQ1001
pin 1, 2, 3 = 0 ohm (0v/0v)
pin 4 = 8,5 ohm (0v/0v)
pin 5, 6, 7, 8 = 3,8 ohm (0v/0v)
PQ1006
pin 1, 2, 3 =...
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Lenovo S230U does not power on.
Hello! I need help please.
The Board Compal LA-8671P Rev 1A_1004A does not turn on. green LED lights, Battarie is charged, 3vLDO and 5vLDO are there. When pressing on the switch, the fan turns for 4 seconds and then it is out again.
measured voltages:
+ VCC_GFXCORE_AXG = 0V
+ CPU_CORE = 0V
when i press the switch, PM_SLP_S3 #, PM_SLP_S4 #, PM_SLP_S5 # rises to 3.2 V and then immediately back to 0V
+ 3vs, + 5vs, + 1.05VS, + 1.8VS, + 1.5VS, + 0.75VS only appear if PM_SLP_S3 #, PM_SLP_S4 #, PM_SLP_S5 # are set to 3.2V.
+ USB_VCCA = 0...
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Re: ThinkPad T460 nm-a581 rev:3
hello newjan
i can not open the attached Files you have send. please can you sent the PDF of it to me?
my adresse is *****************
thanks a lotLast edited by SMDFlea; 07-21-2022, 12:55 PM.
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