Dell Inspiron 5558 AAL10 LA-B843P not turn on

[arber1232]

Hi everyone i have Dell Inspiron 55588 AAL10 LA-B843P ver 1.0 when i press power buton turn on stay for few seconds and turn of fan spining and stop .. when i put charger power light bliking 2 times .. I try to reset ,,i program bios with clear but not working ,, i change charger but is same ... I measure and voltage is ok ..19 v 3,3v 5v can i help me to resolve this problem ?

[Sephir0th]

Re: Dell Inspiron 5558 AAL10 LA-B843P not turn on

Check voltages on all coils while pressing Power Button. And also measure Resistances to ground on all coils with Power removed.

[arber1232]

Re: Dell Inspiron 5558 AAL10 LA-B843P not turn on

check voltages on all coils while pressing power button. And also measure resistances to ground on all coils with power removed.

[arber1232]

Re: Dell Inspiron 5558 AAL10 LA-B843P not turn on

the voltage when i pres power button is ok i have voltage but for few second

[mcplslg123]

Re: Dell Inspiron 5558 AAL10 LA-B843P not turn on

On page99, power sequence is given. check out which rail is not rising at all. You may need to turn on frequently.

[arber1232]

Re: Dell Inspiron 5558 AAL10 LA-B843P not turn on

On page99, power sequence is given. check out which rail is not rising at all. You may need to turn on frequently.

ineed your shcematic

[arber1232]

Re: Dell Inspiron 5558 AAL10 LA-B843P not turn on

PM_SLP_S3# when i press power buton stay for 1 secon 3.2 and go 0 v ..PM_LAN_ENABLE is same stay for 1 sec and go 0 v...5V_S0 is ok PM_SLP_S4# stay 3.3 v....SYS_PWROK stay 1.3 v and when i pres power button go 3.2 for 1 sec an go 1.3 v,,,3D3V_AUX_KBC 3.2v ....S5_ENABLE 3.2 v....3D3V_S5 3,2 v

[lapfix]

Re: Dell Inspiron 5558 AAL10 LA-B843P not turn on

Can you take the voltage for this U3601, all pins.

MOD Edit: Link to schematic -> https://www.badcaps.net/forum/showthread.php?t=66749

[arber1232]

Re: Dell Inspiron 5558 AAL10 LA-B843P not turn on

pi1-5v
pin2-5v
pin3-3.2 v for 1 sec whwn i press power button and go 0v
pin4-5v
pin5-3.2 v for 1 sec whwn i press power button and go 0v
pin6-3.3v
pin7-3.3v
pin 8and -when i press power buton go 3.2 v for 1 sec and stay 2 volt when light power turn off
pin10-2v but when i measure this pin laptop stay for 5 min tries to turn on
turned on and e see the cpu is work or when jum pin 9 and 10 laptop
pin 11-gnd
pin12-when i turn on go 1.1v and go for few seconds 0v
pin13and 14 -when i turn on go 5v for few sec and go 0v

[arber1232]

Re: Dell Inspiron 5558 AAL10 LA-B843P not turn on

i turn on laptop i jump pin 9and 10..... i Discrete to UMA (i dont now what is discrete to uma but i see in youtobe ) but i think desable gpu with this trickbut i need gpuneed gpu

[mcplslg123]

Re: Dell Inspiron 5558 AAL10 LA-B843P not turn on

q3601-Voltage on all pins??

[Sametbey]

Re: Dell Inspiron 5558 AAL10 LA-B843P not turn on

U3601 has switch function for 5V_S0 and 3.3V_S0 after power on. Check the coil and voltage outputs for short circuits. Check components that get hot by starting frequently.

[arber1232]

Re: Dell Inspiron 5558 AAL10 LA-B843P not turn on

q3601-Voltage on all pins??

no is U36o1 voltage in pin...No laptop turn on is ok but when I desabled gpu turn on

[arber1232]

Re: Dell Inspiron 5558 AAL10 LA-B843P not turn on

U3601 has switch function for 5V_S0 and 3.3V_S0 after power on. Check the coil and voltage outputs for short circuits. Check components that get hot by starting frequently.

No i not have circuits and not i have comp to geting hot

[cdilan88]

Re: Dell Inspiron 5558 AAL10 LA-B843P not turn on

Hi did this issue get fixed? I also have the same issue.

[cdilan88]

Re: Dell Inspiron 5558 AAL10 LA-B843P not turn on

Hi did this issue get fixed? I also have the same issue.

VRAM and VCORE are not stable. any idea?

[arber1232]

Re: Dell Inspiron 5558 AAL10 LA-B843P not turn on

Hi did this issue get fixed? I also have the same issue.

yes i cut line gpu becouse gpu is short

[davidfrank77]

Re: Dell Inspiron 5558 AAL10 LA-B843P dis to uma

Finally on this ways I got my problem resolved dis to uma display.
Remove two coil one capacitor near to coil and four jumpers on back side.

[arber1232]

Re: Dell Inspiron 5558 AAL10 LA-B843P not turn on

i turn on laptop i jump pin 9and 10..... i Discrete to UMA
Laptop is fixed without gpu