820-3115 - Green Light, but won't turn on

[pws6074]

No water damage or something close to that.
The board looks pretty clean.

I get some measurement:


PPBUS_G3H - 12.64V
PP5V_S5 - ON C7273 4.97V (low)
3V3_S5 - 3.49V
SMC_ONOFF_L - 3.49
G2_EN - 3.49v
U7200 - pin 6 = 0.67v
L7220 - R to G = 0.841 kΩ
PP5V_S0 = 0

Any hint?
Thank you

 

[dukefawks]

Check all rails for shorts. Check PPVRTC, check for power pulsing on 5V rail.