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New board direct from Apple's warehouse, new top case with battery too. M3 Max 512GB from Apple. Battery from Apple. Touch ID swapped, from Apple. New Logic Board hooked up to new genuine battery, adapter 140W USB-C OEM Apple plugged into FNB58 shows 5v-20v ok then resets ~1 second later...

-=SOMETIMES chimes. Usually doesn't. I'm mostly sure both speakers were hooked up but only the Left side (LIO side) sounded when it did chime=- It does not seem to detect the headphones. System Information has no entry under audio device. PP1V5_S0SW_AUDIO_HDA - 1.5 PP5V_S3_U6210 - 5V (what a...

Hello, I’m troubleshooting a rather nice gaming laptop with a battery issue i can’t seem to figure out. It does not charge the battery though it seems like it’s attempting to. I found both high and low side PHASE fets shorted internally, replaced them with WHAT I THINK is are equivalents (og =...

Like is there a specific resistor or coil like we used to be able to do on the 820-2915 Does the MacBook need the GPU to enter Target mode?

This machine came from a different shop. Damage to UA600 and nearby PP5V_G3S support. Replaced chip, resistors, cleaned traces, verified continuity and, found 5V present on PP5V_G3S and GPU_COREREG. Damage near SSD0 components as ususal but no shorts. I lifted the controller to check even...

Customer Says: "Replaced battery now it doesn't start up." Sure enough it was an amazon battery, I've got a genuine working one on the bench right now. 3V3_G3H - Present 3V3_G3H_RTC - Present 5VG3S - Present AWAKE - All present SLPS2R - All present ALL_SYS_PWRGD - not present SSD 2.5 - Present...

PP1v8 was shorted due to internal board short i THINK I successfully resolved. 1v8 is present and stable. Damage was extremely localized thankfully. I think that's all good, hall sensor isn't even populated right now, i plan on running wires, not using internal traces. ==== Its behavior now...

820-01700 presented with no obvious damage. Customer says wouldn't wake from sleep one day. This is the board with the "left side SSD controller corrosion problem", so I looked there first and found the smallest of evidence of the usual corrosion *beginning* to occur. I saw just a little bit...

Problem: Without battery any usb port pushes 20v @.07mA then immediately drops to .05mA for about 20 seconds. Reboots and repeats. With battery, creeps up to 800mA and battery inductor "lights up" under thermal cam. Reboots after 20s again. I removed U4901, as it took a lot of damage. Still...

Other tech ultrasonic'd this and it worked first try, video ok etc. Customer came to get it and ofc it's not working. Found bad R8178 that was keeping 3v3_s0 missing, measured in the Megaohms (and possibly Q8131), replaced now get fan spin. Found traces near SMC chewed through, jumpered them...

Not entirely sure of history, no water damage visible anywhere. Tried the usual SMC/PRAM reset. Bare board boots ok to OS on external. Screen seems detected, EDP_PANEL_PWR_EN is high as is DP_INT_HPD and SMC_LID. I can't make out an image but I seldom can with these. I looked under the scope...

Water damage near Q7660/Q7680 (p5vg3s and 3v3_g3h). Replaced obviously bad ones, lifted the fets/cleaned pads. Every power is present but CPUVCC and screen/backlight as far as I can tell, even lid signals. Not stuck in DFU, had to force DFU using keycombos to make sure. Just "macintosh" in...

Came in with no damage seen, both sides of board and case. Powered on as soon as I put my ammeter in, pulled 20v booted just fine, was charging battery etc. Chalked it up to bad luck and put it back together, now it doesn't work again. Now it pulls only .063A and does not loop boot. 1v5 LDO...

Board had water damage near U9080, removed U9080 (it looked awful), and most support components around it. Board pulls 20V from charger but Im getting 11V on PPBUS, 14M resistance to ground when powered off. Diode red on ground = .391 (after 10 seconds) I get 20V, seems to pull .8 amps then...

Every other port does 5v/reboot loop. One CD32 (u3200) just does not seem to make a circuit at all. Is it hard fucked or am I missing something. I tested fuse, looked for obvious shorts. Also any tips on digging out underfill if I have to replace this?

On boot, the machine is very slow, with the fan on high. Managed to get iStat Menus and it shows missing readings for Bottom Skin, CPU Prox, DDR3 prox, PCH, Right fin stack. No visible corrosion, no evidence of liquid on the bottom cover. Bottom skin comes and goes, but the rest are always...

I figure this is a long shot but how can I diagnose a suspected dead CPU/GPU on this thing? Damage around QA340 and it's capacitor buddies on pins 18-23. Replaced all. Damage near mux chip and U7370. Replaced both and buddies nearby. CPU VCC not present, GPUVCC stable around .9V with...

Came in with lots and lots of damage near J8300 display connector. Replaced, measured OK, many support components replaced as well. Tested OK on bench, got picture and backlight, cleaned up and ultrasonic'd JUST THAT AREA. 99% alcohol bath in that place and oven. Retested after 100 C degrees...

Was performing mic repair on a fully working board, probe slipped, shorting I THINK the left subwoofer amp to ground or to a power source of another line (I was tired). After removing/replacing both right channel amps the board does not run off of battery but starts up and works normally...

No obvious damage, good magsafe. Gets orange light, but ALL_SYS_PWRGD is stuck low and I don't quite understand how to follow back to see why. Power rails: PPDCIN_G3H: 20.85 PPBUS_G3H: 12.59 PP3V3_S5: 3.35 PP3V3_S4: 3.35 PP3V3_S3: 3.35 PP3V3_S0: 3.34 PP3V3_SUS: 3.35 PP5V_S5: 5.0 PP5V_S4: 5.0...