dell XPS 17 L702X p09e002 - completely dead

[Techtiger]

Re: dell XPS 17 L702X p09e002 - completely dead

well i went back to this idiotic board, and i did something.
i took out pq36 and now i have 14,7V on +15v_alwp
i took out pq40 and pq41 which were pulling down +15v_alw, and applied 15v on +15v_alw line
surprise! the power button light up. BUT no power on...
I have +5V run and +3.3V_sus

i don't know what else to do...

try to flash bios and check
sio_pwrbtn
PM BATLOW
RSMRST

[justin35]

Re: dell XPS 17 L702X p09e002 - completely dead

try to flash bios and check
sio_pwrbtn
PM BATLOW
RSMRST

sio_pwrbtn 0.001v
RSMRST 0.001v

i didn't reflash bios because i don't have one....

[justin35]

Re: dell XPS 17 L702X p09e002 - completely dead

got some news....
i've put back all the pulled out parts and +15v_alw was 6.9v
i replaced ITE8518E chip with another ITE8518E because i suspect it is faulty....
the problem is it was from a different board model(toshiba dell don't know)
+15v_alw is now 10.8v
i have 3.3v sus, 5v_sus
power button is lighting up as soon as i plug in the charger.
also battery sign is lighting up.
i assume this ite chip must be programmed in order to work.... or this one is faulty too...
i will try and search for a new preprogrammed one...
what do u think? could it be this?

[mcplslg123]

Re: dell XPS 17 L702X p09e002 - completely dead

ITE8518E is NOT Programmable.+15VALW line seems to be ok.Power button light glowing on adapter connect-may be mb is turning on. You need to measure voltage on kbc pins. You are saying you have SUS voltages-Thats possible only after turning on. So the mb is definitely switching. Now check with power sequence which rail is not rising. Flashing a known good bios should be the first step.

[justin35]

Re: dell XPS 17 L702X p09e002 - completely dead

Board had originally it8518e cxa and i only had it8518e hxs
As far as i understood they are not compatible... si i have to find a cxa one then try again...

[sellit]

Re: dell XPS 17 L702X p09e002 - completely dead

Did you managed to fix it.
I have the same board, not powering on, no power led.
Flashed BIOS and EC with 2 different dumps, replaced IT8518E CXS with used IT8518 HXS.
Got PL3 +3.3V,
PL4 +5V.
PL2 +1.5V(when pressed power button)
+15VALW got +11.46 (on PQ36)
Got +3.3V on BIOS and EC chip and power button.
Battery LED lights with battery pluged in.
Where to search next?