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Device came in as not turning on but i plugged in the charger it turned on. Worked for a day and then will not turn on. I take out the board. Corossion on and near the Wifi chip - but no shorts. Replaced the Caps. PPBUS_AON is 8V. Removed the Fuse - get 12.3V at C5250. PP3v8_AON is 3.8V. Since...

SSD is working. Fan Spin high and device very slow. tried a different ssd as well.

PCIE_CLK100M_SSD_P/N is shorted when SSD inserted and without SSD the diode reading is .300 Q5810/30/60 is readings are normal. Still replacing them just in case.

I dont know how to test them. Can you guide me?

Can you help me understand Q5230 and Q5240 because CHGR_PHASE2 and PPDCIN_AON_CHGR_R are not generated when battery is connected. i dont why i feel the issue is in this section of the board.

Should i replace it?

Same. Device is running very slow as well.

Not charging. Checked Installed this MLB on a known good chasis. Same issue. Issue with Logic Board. Did DFU Restore as well.

Its the same with LIO Board/Flex. Traces also good.

With all connected except trackpad - i get these voltages now and device turns on as well. Couldn't check the charging as TP/KB not working. CHGR_PHASE1/2 PPDCIN_AON_CHGR_R PPVBAT_AON_CHGR_R / PPBUS CHGR_BGATE

But the point here is all voltages are present without battery connected. Can it be a DFU Restore Case? I mean DFU revive didnt work. Also since all voltages are present when put on charge and a few are missing as soon as the battery is connected the circuit which tells the logic board to...

Its .221

With a charged battery i did a DFU revive. This time i get logo on screen and loading bar with Host mac still halfway at "installing Software" the target mac was on and not charging. Didnt enter DFU with KB and had to jumper it. With Device on andCharger Connected (20V and 0 Amp Draw)...

Got hold of a charged battery. Now what should i do?

LID is okay. Backlight and Sound go off when lid is closed. HWMonitor shows "Memory Proximity" and "HeatPipe" at 128 C

R8070 is a No Stuff point on the board. Ran a jumper. now i get voltages and the macbook turns on detecting the SSD. Is this the permanent solution? Also fan spinning at max continuously but nothing heats up as such. When LID is closed it will not go to sleep and will shut down after 1 minute...

Pin 1 is 3.3V Pin 2 is 0.4V Pin 3/4 is 3.3V Pin 5/6 0V Pin 7 0V

There are no shorts on U3710/1 as well. But voltages are 0V

Both are 0V at both ends

Apologies Pin 2 is 0V. PP3V3_S0SW_SSD is also 0V (No Shorts) R3742 Resistance is 120k Ohms and rising.