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I don't understand the question. I always test with charger only initially. The first test after putting the fuse back was charger only and it attempted to boot, then i unplugged it and put it into the housing connected everything. It booted to login screen and as soon as i clicked on the type...

After replacing both q5230/40 i got 12.28v at f5200 pin 1, i then put the fuse back. Machine when to 19v. I then put it into the housing and it booted for to login screen as i was attempting to login screen went black. Tried powering it on and now its back to 5v. Ppbus_aon is now cycling from...

Hi, so i have a a2337 no liquid damage or anything but ppbus_aon is only 5v I have replaces u5200 the result is the same, the current sense resistor are all fine for u5200. Ppdcin_aon_chgr_r is 5v. I removed f5200 and the voltage on pin 1 was 4.9v Diode mode on f5200 Pin 1 is 0.560 Pin 2 is...

The result is the same no left shift

Is there going to be a difference from the in built keyboard viewer in macos vs an online one as i already checked with the inbuilt one

Yes that is correct

The pair is correct. Both are a2338 parts that are known good

I figured, i tried reading the schematic but there isn't a detailed version of the keyboard matrix for me to look at and understand. I have already tried 2 keyboards and trackpads and now i am at my wits end. Is there anything i can look for specifically?

So this machine came in with liquid damage Had no image, ghost input and fan fast For no image i just replaced the resistor rr201 with a 100k and that worked For fan fast i replaced ue501 For ghost input I replaced jt200 and dzt204 dzt 203( they looked damaged) And now i am stuck as the left...

Also all the components like the resistors and capacitors around the chip are they the same value on other boards as the previous technician knocked a lot of they off?

Can i use it from the air a2337 or pro a2338? I have some spares of those

So the great news is its not tied to the board. Are there any other boards that have the same one other than the 14" and 16"? Otherwise i gotta think as to what i need to do with this machine

Hello, picked up an a2442. It has 5v on all 3 type c ports so opened it up to check and saw this chip on the board was destroyed alongside missing alot of the resistors. So the first question is what does it do and can it be replaced?

I will test the battery with another board and i have more batteries if this one is actually bad, but i think something else is causing this. What are you're thoughts on the restarts while booting to then successfully boot and ppbus aon being 12.01 v. I will let you know about my battery...

Alright so checked again. This is with only battery connected. Sys detect 3.7v Sys detect l - 0v Last time i checked was right after i replaced q5155 and it charged for 30 seconds. It has about a 1v on it. Also checked ppbus aon. At one point was 10.35v however the most consistent i can get is...

The machine does work with a charger. The battery is identified. 1% and says service now. Its has 150 cycles. Sys detect is about 3v Sys detect was about 0.9v This was checked last night. I will check again and confim

My second post yay. Alright so i have another a2338 with liquid damage. This machine is confusing. Initially it was 5v 0.05a. So checked ppbus_aon and it was 0.7 v. Figured maybe shorted so injected voltage around 1v on f5200, got no power consumption. Plugged it in and then machine booted. As...

So the keyboard doesn't seem to be required. And what am i looking for on those pads. Like a voltage ?

Ok so i have a a2337 board i use for testing panels before i install them. Unfortunately yesterday it stopped working. It just take 5v 0.48a and if i put it in a housing it will sometimes go to 19v but only take 0.02 amps. I believe the device is in dfu mode due to the multiple on offs. I...

Replaced ud201 and ud5150 on a whim from a post i read earlier. Battery is detected now and charges. I am not sure which component replacement fixed it but i would like to believe its ud5150 I2C_SMC_PWR_3V3_SDA - 3.2v I2C_SMC_PWR_3V3_SCL -3.2v This was after i replaced both components. Thanks...