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I did some searching and could not find that chip available. At least in the united states.

I am at a bit of a loss. Before replacing u7650 today I powered on the board to do some more tests quick. Next thing you know I smell electrical and it appears U7800 fried. No idea why. Anyways, PPBUS_G3H is now gone and short to ground. Can this BGA chip even be replaced?

Will do. I will update tomorrow.

PPBUS_G3H - 13.04v PPDCIN_G3H - 20.3v PP5V_S5 - 8.5v PP3V3_G3H - 3.4v PP3V3_S5 - 0v PP1V8_S3 - 0v pp3v3_sus - 0v Buf_smc_reset_l - 3.4v smc_pm_g2_en - 3.4v PPBUS_PMIC - 13.03v PP3V3_LDO3V - 3.19v PMIC_SHUTDOWN_L - 3.16v

PP3V3_S5 - 0 PP3V3_SUS - 0 PP5V_S5 - 8.5V My apologies. Not really used to the newer stuff. Power alias a tad confusing

Sigh. My voltmeter took a dump. Haha. New voltmeter in hand. New readings PPBUS_G3H - 13.0v PPDCIN_G3H - 20.3v

R7020 - 0v PPBUS_G3H - 13.04 This is with board out , no battery attached.

Out of a 2017 MBP. No history on board. U7650 and surrounding does show some signs that someone before me had attempted some repair. PPBUS_G3H - 13.04V PP3V3_G3H - 3.4 PPDCIN_G3H - 0 Suggestions on where to start?

I used the term reboot. I should have stated it would totally shut off after ten seconds or so and then after a brief amount of time power back on.

Replaced r7110 resistor and all is well. Thanks guys.

Nevermind forgot these do not fan spin until under heavy load.

Additionally I am not getting any fan spin whatsoever.

Sorry guys maybe I didn't explain the issue correctly. I'm well aware what a flashing folder means. I do not have a drive installed. The issue is the computer will power down by itself and then back on every 10 seconds or so. Im led to believe it may be an issue with the u7100 area...

Got in a 2015 MacBook pro Retina with supposed liquid damage. Believe prior person may have cleaned because I cannot find any corrosion. MacBook powers up to flashing folder and within 10 seconds it reboots. Using genuine charger. Any suggestions on where to start?

I have a 2.2ghz i7 board that I'm hoping to fix. Overall the board is very clean. Mag safe goes from green to orange. PPBUS_G3H - 8.56 PP3V42_G3H - 3.41 PP5V_S5 - 5.00 PP5V_S4 - 5.00 PP5V_S3 - 0.00 PP3V3_SUS - 3.32 PP3V3_S5 - 3.32 PP3V3_S4 - 0.00

Problem resolved. Dumping the bios fixed the issue. Thanks again!

Forgot to update this. Came down to rebuilding some traces. Thanks again everyone

Do I need a chip programmer for this? Searching didn't come up with much.

Sorry for my ignorance. I've never done that before. Any direction you can give me I'd appreciate. (I'll start googling) haha

Yes I tested each resistor and checked traces. All is good. What's involved in replacing the bios? Doesn't this need to be programmed first?