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T2 gets warm, PMU voltages are present Replaced both UB3/400 multiple times. Device is visible in DFU via U31/3200. Does it seems like CD32 issues? Was it CD3215 which needs all 4 to be alive or only 2 on one side?

Read around that it could be a SSD failure. Anyone come across this? Gets deceted in Recovery mode, Did Revive and Restore, same error. Unexpected device state 'Recovery' expected 'RestoreOS' (Probably caused by corruption or panic in the bundle's restored) [com.apple.MobileDevice.MobileRestore...

No short, no liquid damage. Slight dust. Seems common issue with this model, but could not narrow it down. Pulling 5V/0.07A No signs of life. PPBUS_G3H_SSD0_SNS = 12.3V SSD_VR_P2V5_EN = 0V PP3V3_G3H_SSD0_SNS = 3.3V And of course it has to be a data recovery case, so no DFU Restore :)

U9580 was blown causing PPBUS_G3H short, removed it, noticed 4Ohm resistance on SSD lines. Replaced U9580, now I see 20V, 0.5A. Fan tries to spin for a second and drops the current to 0A and cycles. Checked with reference board, PP2V5_NAND_SSD0 is 11Ohm. Cant detect any other shorts...

Cleaned the oxidation of the touchbar connector. Replaced U3100_X and _T CD3217's twice in case if they are causing it. No other shorts around the board. Can see it for split second in DFU mode but dissapears. 5V transitions to 20V before cycles.

Got this macbook with severe short on the tpad connector. Managed to drill enough under the tpad connector to remove the short. Now it turns on but cannot enable USB mouse/kbd without loging into the system to extract the data. Is there a way to kick in the keyboard without tpad connected?

Tried SMC reset, Voltages stable, tried bare board as well. No signs of liquid, reflowed SMC in case. Any suggestions

I got this Mac with screen distortion and loading only in safe mode. Suspecting GPU failure, are we are of any ways to disable the dedicated GPU and run it via the Intel integrated one?

Strange case, had a small amount of liquid around the ribbon comm line cable from the battery. Cleaned the socket and ribbon cable. Batt is not charging, sometimes pulls up to 0.9A and then drops back to 0.2A Replaced the battery with spare I had from another A2289 (not new ordered) Exact same...

Interesting case, I got two of these with same fault. No liquid damage or sign of impact. Trackpad connector seems intact, no prior work. Tested spare trackpad still no response. Connected individually to eliminate the other and both Keyboard and Trackpad are not working together and...

I am following A2485 820-02100 schematic as I can't find this one. UN480 is a different layout on A2485 LT8642-2 while this layout on A2991 is LT8642-1 GND - 0.23ohm - for reference VIN - PPBUS_NAND0 - 0.70ohm P2V5_NAND0_SW - 0.61ohm If I lift up LN480, I get 0.6ohm on the PP2V5_NAND0...

Came not turning on. 5V 0A When I opened it a screw came off from Q5800 area. There is a small spark indication on C5844 PPBUS_AON measures 135Ohm. Compared to 2.5MOhm on a spare board. Cant detect any shorts or under 100Ohm spots, apart than PPBUS_AON. For a moment I got 5V 0.33A with Q5800...

Seems serious overheating, all battery cells boughed up. PCH decapped Tried Apple Migration/data transfer kit and cant detect the SSD neither in Disk Utility nor on boot via the kit. Short on the PP3V3_S5 side, but with removed lifeboat PP3V3_S5_POLARIS reads 0.75Vdc All point on the SSD...

Corrosion on R530/31 Replaced both and repaired the PP3V3_S0_EDP_SW trace. Reflowed the SMC to ensure gunk removed underneath. Still no current draw at all. No shorts. Tried to bypass SMC. from aliases table voltage stops here PPVRTC_G3H = 3.4V PP3V3_S5 = 0v PP5V_S5 = 0v No pulse on...

Turns on with a chime noise, capslock responds. No picture on internal, HDMI or USBc videos outputs. Can see it appearing in apple configurator. Seems to be turning on. Milk coffee liquid damage via the HDMI port. Mainly around UT520, HDMI port, QH501/2, UH502 PP5V0_HDMI_DDC_CONN - 5V...

Not turning on, managed to turn it on after cleaned little bit of oxidation around SMC and with SMC bypass. Worked for a bot and stopped turning on. No current draw PPVRTC_G3H = 3.41V PP5V_S5 = 0V PM_SLP_S5_L = 0V No visible short or damaged traces/components

Cleaned corroded traces and retracted. Replaced R8431. Turned on for a second saw loading logo. Switched off to test further, stuck at 20V 0.02A. T2 warms up, but pretty much stays only on it. Tried DFU restore fails repetetivly. Can't detect any shorts.

Got this iMac with customer DIY replaced SSD, since then it turns on with no backlight. Unlike the Macbooks, it doesn't seem to have backlight boost line on the main connector, only plain PP12V_LCD line. Not sure how bent pin on 12V lcd line can cause backlight failure. J8200 cable seems...

No short on major coils and caps PPVBAT_AON - 0.15V PP3V8_AON - 0V

No Liquid damage, slight oxidation around C2441 RP2712 Loads externally, stable. Only SSD not detected. SSD_PWR_EN = 3.25V SSD_RESET_L= 3.30V PP3V3_S0SW_SSD = 0.4V P3V3SSD_VMON = 0.12V U5480 diode measurements seems ok U3710 diode measurements seems ok Tried multiple SSDs and SMC reset. Can...