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Hello Tried DFU. Not sure how long I am supposed to wait. It appeared to work but laptop didn't boot like in video. Got to the point where it got "stuck" I get this error, sometimes, when I try to run again. I didn't get this error when I attempted the second time (where the progress bar...

Seems to be PP1V8_SLPS2R - 1.8 volts (pulsing / not stable) PP1V8_AWAKE - 1.8v PP1V1_SLPS2R 1.1v PP0V8_SLPS2R 0.79v PP0V82_SLPDDR 0.82v PP3V3_AWAKE 3.37v PPVDDCPUSRAM_AWAKE .8 PP0V9_SLPDDR .9v PP1V1_SLPDDR 1.1v PP1V2_AWAKE 1.2v PPVDDCPU_AWAKE 0.754 Will try DFU

Update Reflowed area around suspected damaged CD3215 Now all ports get 5.21v and 0.07a / 0.08a All ports deliver power to F7000 (12.29v) and R7020 (5.2v) Does not continue to 20v success :(

PPBUS G3H 0.332v diode mode to ground (assuming I did it right) Issue appears to be localised to something going on with that one port. I am assuming my issue is with U3100 since that was the only area of damage I could see. Does that correlate with the port that is only drawing o.1a? It's...

5.21v on all ports. 3 ports draw 0.7a 1 port draws 0.1a R7020 is getting voltage (5.2v) ONLY when connected with ports drawing .7a, NOT with port drawing 0.1a F7000 On"working" usb 12.29v on '0.1a" usb we get 1v

Update. Tested all ports again. One USBC port only draws 0.01A . I'm not sure how to differentiate which port it's connected to at this stage. I'm running tests at varioius points, and will post below. All draw 5.22v v with no reset J3300 side Circuit Top (0.01a draw) Bottom (0.07 /...

Q3440 replaced. but all USB3 still draw 5v. Any ideas where I should look next?

Hello Board is obviously corroded in about 5 places. Power supplies 20v, 0.04 amps on all 4 ports after a little clean with Qtip. I have a schematic diagram but not the board view file. Will search for this and try to update rails.

SMC_PM_G2_EN is 3.6v PP3V3 S5 SMC VDDA 3.43v SMC_WAKE_L 3.089v SMC_CLK32K 1.732 PP1V2_S5_SMC_VDDC 1.2V PP3V3_S5_AVREF_SMC 3.3V SMC TCK 3.43 SMC TMS 3.43 SMC TDO 3.42 SMC_TDI 3.43 SMC EXTAL 100mv SMC_XTAL 80mv

The second post is for our internal reference so I could tie it to the thread. It's a "board only" job so no customer or anything visual to tell it apart from the other jobs. :)

#1 (internal ref)

Hello, We have a Macbook Air not powering on. Draws 40ma We have PP3v3S5 but no S4 rails S4 Power Enable is missing PM SLP S5 L is 0v SMC_S4_WAKESRC_EN 0v PP3V42_G3H 3.44v SMC RESET L 3.4v Is this SMC issue? SMC is not hot.

All ports get 5v only.

Hello, long time no post. I have a 820-00850 board which has no power, USB provides approximately 5.2v on all ports and 0.05 / 0,06 amps. We have got PPBUS_G3H 12.3v Have not got PP5V_G3S I'm unfamiliar with exactly how this model works, aside from a few of louis' videos. Looking at the...

How cross compatible are the SMC's ? Does it need to be from the exact same board number?

I have removed F7140 and F7141. Diode mode to ground on PPBUS_G3H still shows 0. on PPVBAT_G3H_CHGR_REG is approx 300. Is the next step to inject voltage into PPBUS_G3H and find the warm thing? Cheers James

Hi Sorry for the delay in getting back to you. I put this one on the back burner. 33ma draw PPBUS_G3H - 57mc (diode mode to ground shows 001) PPVIN S5 HS COMPUTING ISNS - 57.5mv PPVIN_S5_HS_OTHER3V3_ISNS - 58mv PPDCIN_G3H - 18.5v PPDCIN_G3H_ISOL - 18.5v PP3V42_G3H - 3.43v PP5V_S5 - 375mv

I have checked Diode mode again, I get 0.337. Is it worth re-balling old SMC, or do I just go straight for a new one?

Had a quick look with thermal cam only thing that gets hot is U5000

Hello So I have removed L7095 and the short is on Pin 2 not pin 1, so does that rule out issues with U7090 ? Just to confirm before I blow up the board... Positive is soldered to Pin 2 of L7095 Ground is soldered to a nearby screw hole Power Supply is set to 1v Amps is set to max 5 (that's...