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I'll have to re do the job with another smc.....

Reballed SMC ( Nighmare job ), and put it back: Now I'm back were it was: green Light OK Pulsing PP5V_S5 and PP3V3_SUS SMC_PM_G2_EN: pulsing At U6901: SMC_BC_ACOK: 3.350V SMC_BC_ACOK_VCC: 3.492V At U6900: SYS_ONEWIRE: 3.470V

I had the green light , but went after reheating the SMC

Hi Guys , I received that 3115 board not turning ON with no history, very clean no apparent water damage PPBUS_G3H: 12.59V PP3V42_G3H: 3.493V PPVRTC_G3H: not stable : 3.33V to 3.49v PP5V_S5: not stable pulsing between 3.5v to 5.0v SMC_PM_G2_EN: pulsing At U6901: SMC_BC_ACOK: 3.353V...

Hi BJF, DUKE, I had the exact same problem ( ppbus at 1.3V and booting on battery ) Solved by redoing the soldering job at U7000, make sure all pins are properly soldered and are in contact with the motherboard. Hope that will help.

Got it. Thanks for your precious advices

ALL_SYS_PWRGD is pulsing once at U1950: pin 7 is pulsing but not pin 3 because SMC_DELAYED_PWRGD is missing Also each time I trigger the SMC I hear that little "tic" noise. Maybe bad soldering job for the SMC or BAD/ not compatible SMC ( not sure if it's coming from the same exact board) but it...

Replaced SMC: PP5V_S5: 5.032V PP3V3_S5: 3.343V PP3V3_SUS: 3.340V PPVRTC_G3H: 3.345V When I turn the power ON, I can hear a little "tic" on the board it come of the CPU area of the board not from the fan but only when the LIO flex cable is connected. I can now have access to the U6100 with...

Smc_clk32k: 0v pch_susack_l: 0.365v pm_pwrbtn_l: 0.233v

tried with another ISL6259 it's the same : No S5 and around U7100 it's more or less the same voltages PPBUS_G3H is 8.19v I think that tomorrow I will pass it in the UltraSonic Cleaner bath just in case there's crap under the SMC.

I've disconnected the LIO board, I've just let the power cable and still PPBUS_G3H is 8.20V the board is pulling 0.018A when I use the DC power supply. Let me try another ILS6259.

Resistance to ground for SMBUS_SMC_5_G3_SCL and SMBUS_SMC_5_G3_SDA: 388.2KOhms Both Their voltages are around 3.44V as it's "talking" so it's like burst mode at the scope. I've also reworked all the U7100 pins one by one in case of bad soldering U7100: 1: CHGR_AGATE 0V 2: CHGR_DCIN 14V 3...

I have signal on SMBUS_SMC_5_G3_SCL and SMBUS_SMC_5_G3_SDA meaning there is dialogue between SMC and U7100.........no?

PM_SLP_S5_L: 0V SMC_ADAPTER_EN: 0V PM_BATLOW_L: 0.233V PM_PCH_PWROK: 0V PM_DSW_PWRGD: 0V at U1950: CPUVR_PGOOD_R: 0.495V SYS_PWROK_R: 0V at U1900: 32Khz OK Y5110: 12Mhz OK Dead SMC?

Hi 2Informaticos, I've just replaced the U7100 and now I have the green light before it wasn't the case. Now: ppbus_g3h: 8.20 PP3V42_G3H: 3.421V PPVRTC_G3H: 3.421V No S5 state: PP5V_S5: 0 V PP5V_S4RS3: 0.082V PP3V3_S5: 0.232V PP3V3_SUS: 0.372V PP3V3_S4: 0.05V I've read in the forum that when...

No History bought on ebay as dead board, looks clean no Liquid Damage PBUS_G3H: 0.01V Resistance to gnd: 3.2MOhms at U7100 R27-28: 20.3 Ohms R17-18: 3.2 Ohms CHGR_AGATE: 14.00V it should be much less to be able to close Q7180 no? CHGR_DCIN: 15.10V So Am I right to suspect U7100? maybe...

Hi Guys, I have a similar issue the SSD is not detected when plugged in the motherboard and shows a question mark "?", other ssds are working fine. So first I thought that the SSD was dead, but when I inserted it plugged it in the USB port this one is seen correctly, once in disk utility I saw...

2Informaticos, I will let you know Thanks so far

Already connected new assembly yesterday thanks, as you advised me yesterday also , i've checked everything before turning ON the MBA with the new assembly. Now I just hope the old assembly has just the flex cable to be replaced and not something else blown inside.

Thanks guys for your support, A last question regarding that damaged flex connector: With your experience do you think that maybe something else in that LCD assembly could be damaged?