Recent content by yair37

there was hole near to UD201 near I2C_SMC_PWR_SDA pad, replaced UD201 compare with good board: I2C_SMC_PWR_3v3_SDA 580 (good board 480) I2C_SMC_PWR_3v3_SCL 590 (480) UD201_EN 550 (600) PP1V25_S2 250 (240) I2C_SMC_PWR_SCL 250 (300) I2C_SMC_PWR_SDA 250 (240)

J5151 totaly damaged, run wires for - SYS_DETECT_L(0.470), I2C_SMC_PWR_SDA(0.480), I2C_SMC_PWR_SCL(0.480) with battery ans charger: SYS_DETECT_L 0.2v I2C_SMC_PWR_SDA 3.1v I2C_SMC_PWR_SCL 3.1v mac on fan full speed from begining, x symble on battery.

its really act like that, 1v for 10-15s and then 0.7v stable..

first the board is 820-00281. CPUCORE-sw1-2-3/isns1-2-3_p -0.9V stable

CPU getting hot, not too hot

work before, just replace screen and now this: no battery - 20v 1.4a with battery 20v 2.8a - fan spin ok. PPBUS 12.6 no know short on board. no SMCBYPASS no usb activity or capslock light. very weird.

board that has water damage not on the board, just on the keyboard(replaced) after 3 weeks that everything was good, suddenly dead and pulsing on all the charging (C and T) every 2-3sec 20v 1a , ppbus 12v pulsing all LDO look ok..

3V8_AON 3.8V stable PPBUS_AON 12V to 9v every 10 sec.

and ppbus now is 12v but chrager is 5v 0.2A and then 0A

replace r5220 P_IN (PPDCIN_AON_CHGR_R) 5v AUX_DET (CHGR_AUX_DET) 1.25v SMC_RST_IN (CHGR_RST_IN) 0v VDD/P (PP1V8_S2) 0.5v and drain EN_MVR (CHGR_EN_MVR) 5v AUX_OK (CHGR_AUX_OK) 0.9v A/BMON 0v CHRG_CSO_FILT_P 12.3v

FF200/1 5v stable

P_IN (PPDCIN_AON_CHGR_R) 0v AUX_DET (CHGR_AUX_DET) 0v SMC_RST_IN (CHGR_RST_IN) 0v VDD/P (PP1V8_S2) 0v EN_MVR (CHGR_EN_MVR) 0v AUX_OK (CHGR_AUX_OK) 0v-0.1v pulsing A/BMON 0v

5V 0A - no short found no water damage. PPBUS_AON 1v take out F5200 - C5254 still 0.5-1v replace U5200 still the same..

the same....too wierd....

No becouse it just show sing of battry charging and dead.. now i was try Restore again: after few min that is stuck it give the error - "Gave up waiting for device to transition from DFU...(4042)" i thnk that the mac is freezing or dead when is start the restore..also on charge he drop to 5v 0a