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Diode mode on Pin 5 was .523. I changed U5700 with one from a M1 machine just for wishful thinking as I am running out of time and most likely have to buy customer a new motherboard as they are really pressuring me and being angry towards me. However I now have 5v on pin 5. I also have 3V8_AON...

Pin 8 PPBUS_AON - 12.3v Pin 6 PP5V_S2_P3V8AON_VDRV - 0.006v Pin 7 PP5V_AON - 5v Pin 5 P3V8AON_PVCC - 0.007v Pin 12 P3V8AON_PWR_EN_R - 4.4v Thank you

P5VS2TPS_PWR_EN is absent. Not short either, fearing U8100 is bad.

Thanks, customer is going crazy at me over this.. 3V8_AON is 0.296 in diode model CHGR_EN_MVR is 4.4v Made me realise the U5700 readings i took earlier were wrong for P3V8AON_PWR_EN_R as its 4.4V too obviously

Need help with this problem I got myself into. Replaced screen on MacBook. Was working fine with broken screen. Used a Chinese screen which have used before with no issues. Battery was unplugged and charger not connected. Board will not take 20v now and won’t power on. Stuck at 5v and 0.06a...

Ok thanks, just to confirm I’m understanding, only way to access data again is going to be to find a donor board and take the SN25A12 from it along with the TBT ROM chip and replace both?

This M3 MacBook has a partial short on pp3v3_s2. The heat signature suggests SN25A12 @ UF500 is the culprit. Are these chips paired? Can I replace with a Chinese AliExpress version? Or if I just remove the chip will everything else work allowing me access to data so I can backup? Thanks.

After a week of leaving it, it finally loaded internet recovery without error 2003f and everything is working installed back to normal. Odd scenario but at least it’s sorted.

Customer brought in MacBook Air 820-01958 for a battery that was not lasting and showing a not charging message. I replaced the battery with a non original most likely Chinese one. It now boots into internet recovery only which never completes. 2003f error. Cannot SMC reset. Holding D for...

An update as components just arrived and replaced ut350 and 352 and all working. Weird as both chips had their outputs but all is fixed. Thanks for your replies.

Can please double check with you: SPI_IPD_TOUCH_CS_CONN_L Should not have voltage on it to be enabled. It has 3.3v so that would put it as disabled correct?

This machine had minor liquid damage, it needed a new lid angle sensor only which was replaced via Apple IRP program. Screen now opens and shuts as it should. It still has no trackpad or keyboard. The following measurement were taken. As I can't find anything missing I am assuming I need to...

POS is fixed. Was either C7125 or I haven’t been putting Q7130 on properly. What a nightmare. Over 4hrs spent

And now q7130 has shorted to ground again. Going round in circles.

Replaced q7130 again. Don’t have the continuinty to pin 10 anymore. F7140 is only 2v tho so I have something pulling it down I suppose.

Yes f7140 has 16v on charger I just replaced C7125 anyway On Q7130 I have continuity from pins 2/3/4/9 to pin 10. This isn’t correct is it?

I’m stuck, need some advice please. This board works fine on charger with no battery installed. With a charged battery and no charger it also boots and works fine. When battery is installed and you plug charger in, the icon says not charging the battery briefly then shows no charger connected...

Yeh I know better. You are exactly right. Unfortunately because I have no patience, frustration at myself and then desperation lead here.. Anyway yes 3.3v is there as well as tpad_vbus_en 3.3v Have traced all keyboard and trackpad pins back to U4801 too.

Put a new u4801 on - no change found it wasn’t doing a smc reset changed q4801 u4850 and u5110 started doing an smc reset but no working keyboard or trackpad. Smc reset has stopped working again now. Reflowed smc cause getting desperate. No change. So as of right now. External mouse works...

Smc_lid is 3.42v