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Did you run ASD EFI? Not Yet Is the original BIOS of the board? No, as the board was doing quarter fan spin those past weeks, I've decided to write another one and cleaned ME and rewrited the SN with the medusa...... But thta's right, as the board is now turning ON, I can piut back the original...

RTC_RESET_L: 3.277V PCH_CLK32K_RTCX1: 0.580V PCH_CLK32K_RTCX2: 0.136V PCH_CLK32K_RTCX2 is directely generated by U1800

but at L7650 Pin 2 (PP5V_S4) I'm mesuring 0.148V in diode mode

Sorry, but none of the 4 PP5V_S4_EXT is shorted to gnd they all mesure around 0.500V in diode mode to gnd

The board is starting after a PCH reflow but here are the issues I've noticed after reassembled everything together: Very slow to load OS even on external SSD Self Shutting down if the wifi card is plugged in, or stays ON if 4 antenna cables disconnected but shuts down when connecting to...

Checked all RX N/P TX N/P of all 4 usb ports none of them is shorted to Gnd

Yes the PSU delivers 12V, but we only need 12V? , no other signal like SMC_ACDC_ID? With the CMOS coin cell removed: PP3V3_G3H_RTC: 3.295V PM_PWRBTN_L reacts (drop from 3.404V to 0.340V) when triggering SMC_ONOFF_L by shorting C600 But still the board doesn't start ( fan not spinning )...

Led501 ON PP12V_G3H: 12.09V PP3V42_G3H: 3.416V PP12V_S5: 12.09V PP5V_S5: 4.979V PP3V3_S5: 3.294V No S4 State when triggering the power button. PM_SLP_S5_L not pulsing when trigger on SMC_ONOFF_L / PM_PWRBTN_L PP3V3_G3H_SMC_VDDA: 3.416V I'm suspecting the PSU but I don't have a spare one to...

That's exactly my idea: to bring it to someone who has an IR reflow machine for BGAs.....will see

Hi , Passed that board in the UC, and the board started few times but without PPVCORE_S0_AXG_R but PPVCORE_S0_CPU_PH1 and PPVCORE_S0_CPU_PH2 were present. finally the board started to act like before: quarter fan spin..... I will reflow U1800 again and see

Thank you Vali

Hi, Just to let you know that the problem is fixed. Now with the board ON it's pulling almost 3 Amps, CHGR_BGATE stays low and pulsing like before. I can see the percentage rising quite fast. I fact, I think that in all the things I did, one of them solved the issue except that the battery was...

I checked the resistance R17/18 and it's ok: around 3 Ohms. I've seen like a short between pin 15 and 16 of U7100 and reflowed as shown in the attached pictures, I've also resoldered J6950, but it didn't solved the issue. I've noticed that with the battery completly empty I'm reading 8.55V...

Yes OSX reports percentage Yes it's starting with the battery alone I'm using a battery charged at 70% Board OFF with Battery Only: CHGR_AMON: 0.00V CHGR_BMON: 0.049V Board ON with Battery Only: CHGR_AMON: 0.00V CHGR_BMON: 0.100V Board OFF with Battery and Charger: CHGR_AMON: 0.660V...

Hi Team, I've this board that is not charging , no sign of WD, and already swapped battery With the battery connected and the board ON : ppbus: 8.37V activity on SCL and SDA lines pin 4 of Q7155 is mesuring 0.969V then pulsing to 8.35V in cycle.....which doesn't allow the battery to charge...

after U1800 reflow , the board is now turning ON during 15 seconds then stops........ I don't remember if I already passed it in the UC.......I think that it will take a bath in the UC...... I'll let you know thanks

already did it : fan at full speed but just like a pulse: same like in normal mode......I will reflow U1800 in case of crap under it

Hi 2 Informaticos, SMC_PM_G2_EN is present but it's disapearing after quarter fan spin or power pads being pressed....so I follwed the signal up to SMC and SMC_PM_G2_EN. Question: Is there any signal/rail upstream before SMC that triggers the SMC_PM_G2_EN? in other words what signal, the SMC...

reballed SMC same behaviour: sometimes quater fan spin and everything pulses or no quater fan spin but I have to short the pads to have the pulse and quarter fan spin after what I'm loosing S5 state because of No SMC_PM_G2_EN. In that "mode" the battery is not charging because CHGR_BGATE is...

I'm quit lost on this issue, and I don't really understand how the display/backlight is managed by this architecture...... I've noticed that even withh the display/backlight working, I have NO power on those GPU Coils/Rails I've mensionned before......2Informaticos could you please explain me...