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i do have 3.3v on PM_WLAN_EN_L, Ive got 0.135v on AP_PWR_EN. i checked and no short to ground on this line. it looks like PW_PWR_EN comes from XDP_DB2_PCH_GPIO10_AP_PWR_EN which is the same 0.135v. would this be an issue with the u1800?
i will check traces and report back. this is the first time I've had a board with no wifi and it not be the card/cable/connector issue, hence why i chose to start by replacing the card and cable. i will check for pm_wlan_en_L and ap_pwr_en. also.
working on this liquid damaged 820-3115, after u.c. the board powered on but had no wifi, and left shift key not working, also io0r sensor reading above hight point.
i got the shift key issue taken care of by replacing the keyboard connector.
Io0R current sensor is reading 10.999 a -I did...
ahhh i see. yea this one is just screwed im thinking. i never had one go all to shit while here and not messing with it. i think this rabbit hole is gonna just be a board replacement.
i would normally agree with you on that, had it been opened up before screwing up but thats not the case. machine came in we always power on to verify the customer issue if possible. Thats where it started going sideways. way before it even got close to a screw driver.
I would check inside the connector and the ribbon very carefully. i've had some of these where something gets stuck inside the connector and either bridges some pins or screws up the ribbon.
sure thing. not sure whats going on with this board. i want to start looking at cpu vcore, but get to bios and its not getting what it needs just power cycles. kinda a rabbit hole for me.