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820- 2849 A Have green Light but PPDCIN_G3H_INRUSH is 1.4V on pins 5,6,7,8 on Q7085. The funny thing is when I plug the charger and check voltage on the pins 5,6,7,8 of Q7085 the voltage is 12.6 v and its start to drop in 30sec to 1.4 V. And on Q7080 voltage is good on all pins. I've checked...

I have 12 inch MacBook A1543 Is not powering on. I started measuring the power rails and I've noticed that I'm missing PP5V1_S4SW. Also U7100 is heating up as hell, and the other strange thing is on pin 56 of U7100 the PPVIN_G3H_P3V3G3H Is around 20V and according to the schematics should be...

i have 820-4924-a water damage has green light but doesn't turn on. I started measuring around and i'm missing PM_SLP_S4_L so i watched on one of louis videos with similar problem so when this signal took me to the PCH i checked for the voltage that powers the PSH -- PM_PCH_PWROK and that took...

Water Damaged Macbook is turning on but no keyboard or trackpad. I started measuring the pins on the keyboard on pin 30 i have 3.3v that's PP3V3_S3 and pin 4 and 5 i have 3.29v, however on the rest of the pins i get variable voltage goes from 2.9v to 1.7 and up and down up and down. Any ideas ...

I have water damage 820-3208-A and i fan spins 5 seconds and stops i went thru the rails and the 5v and 3.3v in s3 state are going from 0v to their normal voltage and back to 0. On U7201 i have VIN and all enable signals and i think is the actual chip. Any ideas ?

On Q7706 in pin 3 and 4 i have the same voltage so Q7706 doesn't open i checked the voltage divider the R7788 and R7789 are good but anyway i replace them and still im getting same voltage on 3 and 4 looks like the divider is not lowering the voltage. Any ides ?

I have this 820-00138 can't power on or off neither power pads or keyboard and i have same working board to measure the voltage on SMC_ONOFF is same voltage like the working board. any ideas why board doesn't turn on and off ???

I know it sounds stupid but i got 13 inch retina and before i open it i've noticed that the place on the housing for the magsafe charger is empty so i thought somebody probably remove it but when i removed the board i can't locate the connector for the magsafe

if im right i think i have to deal with the SMC because i'm missing P5VS4_EN and i don't have the PM_SLP_S5_L and SMC_S4_WAKESRC_EN

there is power on all pins except 1 2 and 3 and that lead me to U4850 and when i measured the pins on U4850 i get voltage on pin 4 10 and 6 --- so on pin 4 i have PP3V3_S4, and pin 10 is PP3V42_G3H and pin 6 is SMC_TPAD_RST_L and the rest of the pins 0 volts. Any ideas ?

I am currently working on a liquid damaged iPhone 6. But not sure where to start after cleaning. I cant seam to find any page about power rails to see if they are all there. So I am wondering what power rails are required for the phone to power on? Is there a power sequence like MacBooks have...

I have 820-3437 no image i have cpu vcore when i measure on pins 18 and 19 on J8300 i should have PP3V3_S0SW_LCD_R but i get 0 volts and that took me to U8300 so on pin 2 and 3 on U8300 i have PP3V3_S5 but on pin 1 i should have EDP_PANEL_PWR and that is missing and following that line takes me...

I've replaced u7100 i have all voltages present for u7100 but i don get SMC_BC_ACOK

i have 820-00138 i put new keyboard but board still doesn't see it. I have signals on all pin the only signal missing is WS_KBD_ONOFF_L any ideas ?

I have 820-2936-b fan spins for 30 seconds and shuts of and starts again there is no water damage. No idea where to start.

820-2530-a no PM_SLP_S4_L comes from MCP but what's powering the MCP?

I have 820-00138 and it doesn't give me an image but works perfect on external monitor so i checked the connector pins on the schematics and looks so confusing compared withe the other boards and also i have to use board view file similar to that board because is not available yet. Anyway i have...

I have 820-00138-a board that someone else worked on it doesn't see the ssd on the schematics i was seeing the signals and i have 3.3v on pins 1 to 5 and 25 to 28, also i have SMC_OOB1_R2D_CONN_L but i dont have SMC_OOB1_D2R_CONN_L and SSD_PWR_FET_EN thosse 2 signals come from u3711 i believe...

im kinda confused on this issue. Is the audio chip located on the small board together with the mag safe? I've checked U8040 has enable signal on out i also have PP1V5_S0SW_AUDIO also U6410 gets 5v but nothing on output also MAX98300_R_P and MAX98300_R_N are missing or they suppose to miss not...

I want to buy good Bench Power Supply Any suggestions. I'm looking at BK Precision 1687B not sure if its good ???