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Am struggling a little today with this board and need some clearheaded suggestions; had a couple in a row and can't think straight:) Board might have had some work done on it, but i think i spotted all the mistakes (some coils of PMIC were taken off, but so far i don't know why, nothing else...

Long time no speak, how are you Vali? took some vacation? Have a 820-00928 here that came in for no power/5V on all ports Saw a blown diode at DB504, which helped me suspect UB300 (also, it lit up under thermalcam) : replaced UB300 with a good CD3215. Now my results are as follows, when...

Need a little help, if you don't mind. This board was liquid damaged, but very minorly: the audio board looks like it took a hit on it's audio amp chip. the main board looks pretty good, with just some minor spots around U7290 and Q7291, replaced the whole area, controller, buck and affected...

Need a clear mind on this, been spending way too much time on this board PPBUS_AON on this board measures 12.00V I thought this has to be 12.6V on this board, right? What can cause PPBUS to be too low? Strange thing is, the board boots and works fine (i only don't have trackpad connected...

Haven't got too much experience with this board, so bear with me. This board came in as no power after some liquid damage to the middle portion of the board (i don't see this often as liquid usually hits the 'wings' on these boards). No Corrosion on the CPU/GPU Area luckily, but only on the...

This board came in for the all-too-common U8900 issue: upon arrival the machine worked fine, but would crash once the board switched from Integrated to Dedicated GPU (the typical MUX issue). I have redone the solder on U8900, but after reassembly, the screen is showing distorted/garbled image. I...

I have an 820-00850 which has one dead USBC Port. Checked the ports, they are all clean. All other 3 ports work perfectly. Customer also just worked on the machine, no issues, besides from it not wanting to go to sleep. I cannot find any corrosion other then some dusty areas, but none of them...

Like the title says: Big Sur is out a couple of days and i have had about 3 customers hand in their A1502 (from 2013/2014 and 2015) for same issue: update stalled and the Mac ends up displaying only black screen. After unplugging the I/O-Board the update can be continued, but the I/O Board...

hi there these are quite new to me still, dont get them often. So i fixed a short on ppbus, was caused by C9074 which spontaneously died i think (liquid was not near this at all) It's hard to find liquid on this guy, but i found some traces broken around U5111 (which i think arent critical)...

Need some help on this one. This one had extensive liquid damage around the usual CD3215 and U7650 area, but also around U7100 and U7800. Initially, the USBC chips weren't good so swapped one of them from one from a donor, this made it ask for 20V again. I've replaced U7800 because it was...

Like the title says: all displays I order in for the A1706/A1708 have missing Ambient Light Sensors.. Causes no keyboard backlight. Does anyone know of the reason, and maybe also a workaround, like permanently enabling the keyboard backlight?

So I haven't applied power to this one yet, because i measured a short on ppbus. Turns out there was liquid under the mosfets for the 3 phases of CPU. So I removed those and the short disappeared. After checking resistance to ground on vcore, and removing all three CPU coils, i found that there...

hi, i got this thing back to life by replacing the ISL. Everything checks out, ut upon handling the board i noticed that both QB300 and QB400 get extremely hot (burnt my finger on them). when using the corresponding USBC ports. I know mosfets can get pretty hot in general, but this is extreme...

so this board was no power initially. had corrosion under UB300 and UB400, replaced both cd3215s Board works, but now it intermittently looses the SSD: 1 out of 10 times it can boot fully, but other times questionmark-folder. The 3v3 and 1v8 for the SSD are there and stable (even when it cant...

820-00840 again.. this one had power problems initially, but after replacing both CD3215s i got it to go to 20v it draws 0 amps ppbus is present at 13V S5 both 3.3v and 5v are there, i get S5_PWRGD S4 isn't (no shorts found) missing enables for S4 missing pm_batlow_l I'm having a bad day and...

00840 with no liquid damage came in for a screen-replacement (original screen had one crack in it, so no heavy damage) So this one has no audio (no audio input/output devices in Sound preferences, and under systemprofiler there is only listed: Devices, Intel High Definition Audio. Audiocode: 0...

HI there, I have 820-3462 that doesn't really sleep. It responds to the LID being shut by disabling backlight, but the board is still in an ?S0 state, all S0 rails are still there including Vcore. Has anyone ever had that? what could cause this?

hey there, I am not the greatest with USBC boards, and this issue in particular drives me nuts everytime. Currently i have 2 boards showing this exact symptom: when charger is connected i get 5.17V (steady) on both ports, and 0Amps draw. PPBUS is missing (0V) and not shorted to ground, no...

Hi there, Has anyone tried modifying the ASD images to run on newer Macs? I remember seeing someone mention something about running ASD 3S162 on newer models? I managed to boot a 2015 15-inch off of 3s162 today by adding it's board-identifier into the ASD config files. (by the way, if anyone...

anyone know what SMS_INT_L does? Just had a board that I was breaking my balls over, spending half a day figuring out why it was running painfully slow. Everything worked just fine, it's just that it booted awfully slow and had read-write-speeds at about 40% of what is normal. After giving it a...