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Hi all, this board came with corrosion on u7200,i clean the area and i change the chip but still the same PM_SLP_S4_L missing but pulsing PM_SLP_S5_L missing but pulsing PP3V3_S4=0.4v (With 2 multimeters) PP3V3_S3=0.4v (With 2 multimeters) PCH_INTVRMEN_= 1.8V PCH_DSWVRMEN_L = 2.1V PPBUS_G3H...

Hi this is a 820-02016 in 5.14v looping 0 - 0.08amps on both usb ports No power on from battery No DFU MODE ppbus_AON = 11.7v-12.15v pp3v8_AON_VDDMAIN =3.73v-3.76v When remove F5200 in C5254 i get steady 12.20v Diode mode PP5V2_S2= 0.2v PP3V3_S2=0.44v PP1V25_S2=0.29v U8100 COILS DIODE MODE...

Hello Guys So the screen turn on and off Tested with good display Smc_lid up and down 0-3.4v BLK_EN 3v

Hello, this is a 820-01521 that came attached 5v 0A In the reads, PPBUS_G3H and PP5_G3S were shorted. I injected 1v to those rails and found that C7675 Q7660 was damaged. By removing these components PPBUS_G3H has a reading in diode mode of 0.456v but PP5V_G3S is still under 0.042v (diode mode)...

Hello, sorry mi English. This is a 820-01521 MacBook Air that came not turning on whit 5v stuck. Connected the mac in DFU mode and apply a revive option but shows the 75 error . Now the usb meter register 20v but in DFU mode have the same issue. In some YouTube video saw that maybe the issue...

Hello guys this is a 820-02016 in 5.13v 0.04amps on both usb ports No power on from battery No enter on DFU MODE ppbus_AON = 12.25v pp3v8_AON_VDDMAIN =3.75V PP5V2_S2= 0V PP3V3_S2=0V PP1V25_S2=0V Diode mode PP5V2_S2= 0.209v PP3V3_S2=0.447v PP1V25_S2=0.228v How can start

Is a 20 MHz oscilloscope useful for macbook repair?

hi everyone, sorry about my english This is a 820-00165 that not turn on. The magsafe led is orange ppbus_g3h 8.56v pp3v42_g3h 3.39v (i think is low and change u7090, r7095/r7096 and istill have same read) pp5v_s5 5v pp3v3_s5 3.3v pp5vs4s3. 0v PM_SLP_S4_ 0v pp3v3_SUS 0v PM_SLP_SUS_L 0v

Hi guys, sorry about my English. This is an 820-3476A that arrived without power on. The SMC looks reflowed and liquid damage around u7200. I change u7200 and now the board turn on but not fan spin, no chime, and no usb activity. I try a good efi bios and still no brain PPVCC_S0_CPU...

hello guys, this is my first post!! sorry my english 820-3115 No green Light ,but turn on with battery PPBUS_G3H 12.57v SMC_BC_ACOK oscillates 0.6-0.8v CHGR_ACIN 3.9v CHGR_DCIN 16.75v SMC_RESET_L 3,3v CHGR_RST_L 3.4v In cap c7050 5ohm In cap c7020 25ohm I try new u7000 and still nothing...