SURFACE laptop M1088058-002 no power, missing DPWROK / PMIC_EN ....

[pc_okay]

Hello,

I have this surface laptop 1 that doesnt start anymore.
Following the power control block diagram i have :
(1) VDDBAT 8.74V
(2) 3.3VA 3.27V
(3) 3.3VA_SW_EN 3.268V
(4) 3.3VA_SW 3.27V
(4) VSYS 8.76V
(4) DPWROK 0V (i only found PCH_DPWROK_A and PCH_DPWROK i supposed it's PCH_DPWROK_A?) (resistance to ground around 1Mohm)
(5) PMIC_EN 0V (270kohm to ground)
....

Greenpack is U56004 if i'm guessing right?
Should i replace it? even if it's creating 3.3VA_SW_EN fine?

If someone has good idea?

Thanks.