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Hi Guys, I know this is an Apple sub, but not sure if you can help me with this one too. I got a schematic and boardview for a close model. location of the parts on the board are a bit shuffled, but schematic ics seem to match. Here link to the Schematic and Boardview - Lenovo FLEX 5-14ALC05 –...

Not Detected at all, tried another bunch of SSD and getting ? mark. Not even one deteced under Disk Utility or System Report Cleaned the traces and rechecked for any damaged/corroded components around. None

U3740 P3V3SSD_VMON - 0.99V SSD_RESET_L - 3.28V SSD_RESET_CONN_L - 3.42V SSD_PWR_EN - 3,23V Cleaned the pads, and tried with spare SSD

got it running without u8150, remembered you mentioning that we don't need it. shall i leave it off? Can load up now and everything seems to work ok on external drive, apart from not detecting the SSD. Tried with 2 spares and none are detected. I can load via USB and seems stable Did PRAM...

L7630 - 1V, only coils I dont have voltage are CPU core L7430 - 1.21 L7820 - 1.8V PP1V5_S0 - 1.5V PP3V3_S0 - 3.32V PP3V3_S4 - 3.31V PP3V3_S3 - 3.32V PP3V3_S5 - 3.32V PP3V3_SUS - 3.33V PP5V_S0 - 5.09V PP1V05_S0 - 1.06V Removed U8150 and turns on ALL_SYS_PWRGD - 3.33V

No core voltage on CPU core U1950 PP3V3_S0 - 3.31V ALL_SYS_PWRDGD - 0.1V CPUVR_PGOOD_R - 3.32V SYS_PWROK_R - 0V PM_PCH_PWR_PWROK - 0.1V PM_S0_PGOOD - 0V PP3V42_G3H - 3.43V

Got corrosion on R7611/12. Replaced them and now stuck on 0.11A. No other corrosion on the board. No damaged traces between R7611/2 and P1V05S0_FB 3.3/5V are present. PP1V05_S0 - 1.04V PPDDR_S3_REG_L - 1.20V PP3V3_S5_REG_L - 3.20V I managed to fire it up with SMC bypass before, but now is not...

820-00840 8HV22 Medusa clean ME + PRAM.bin file you have provided. I did erase + flash at once, which got stuck at 90% and had to interrupt. The second time I erased the flash first, then flashed and went straight forward. PPVCCCPU_S0G - 0.97V PPVCCSA_S0G - 1.05V PPVCCIO_S0G - 0.95V...

Flashed the bios. I get 20V 0.57A and feel the heat on the CPU but no keyboard or screen light. Fan spins moderately

Can I swap BIOS chip from another 00840?

PPVCCCPU_S0G - 0.96V PPVCCSA_S0G - 1.04V PPVCCIO_S0G - 0.95V I can't see any short on the test pads in 500 range. Nor any damage around it

CPUVR_SW1 - 0.96V CPUVR_SW2 - 0.97V SAVR_SW - 1.05V Missing PPVCCGT_S0G_PH1/2/3 PPBUS_G3H_CPU - 13.01V PPV_S0 - 5.1V Something with U7100? All other coils seem to be providing output. Nothing suspicious around CD32's

I have tried SMC reset and PRAm reset. Disconnected all connectors and tried for USB activity. None No liquid damage, but it is quite dusty. A cheap charger was used before. Advice on what to measure?

Thanks for your help

j8500 All EDP_INT_* lines 0.234Vdc range except EDP_INT_AUX_N (pin 1) which is 0L

I got this A1706 820-00239, which had a screen issue. Probably one of my test screens is problematic as after connecting it I lost the internal picture, tested other screens still same. Torch shine through it, to check if its only BL but cant see anything. It turns on and chimes, capslock is...

No picking up anything in DFU mode, so dead CPU/T2 it is, I guess.

Hi guys, I have this A2179, which had a cola spill, melted USBC connector and trackpad connector on the trackpad side. Replaced USBc connector on the board and socket; R6960 was severely corroded, I replaced it and now can power it on. 20V 0.37A but not getting any capslock, USB activity, or...

Thanks for pointing me in the right direction. Managed to find the cold joint on the P3V3RTC_AVIN

Data Recovery case - Lot of orange spill all over the place U6960, U7650, U9060, Q7660/7680 PPBUS_G3H - 12V 3V3_G3H_RTC - 0.13V PP20V_USBC_XA_VBUS=5.2 PP3V3_G3H=0V PP3V3_G3H_RTC=0.13V PP5V_G3S=0 PP3V3_G3S=0 PP1V8_G3S=0 PP1V8_S3=0