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Hi guys, Im working on a MBpro 16" that had a little water damage around L5199 the rest of the board is clean. L5199 was replaced but still the touch bar is not working (also tried a new one), i have BKL in the keyboard, and: SPI_DFR_MISO_R 0.078 V DFR_TOUCH_INT_L 0.080 V DFR_LID_OPEN_L 0 V...

SLPS2R and AWAKE PP1V1_SLPS2R 1.09 PP1V8_SLPS2R 1.79 PP0V8_SLPS2R 0.8 PP1V8_SLPS2R_PMUVDDGPIO 1.79 PP1V25_SLPS2R_SMC_AVREF 1.24 PP1V8_AWAKE 1.79 PP1V2_AWAKE 1.19 PP3V3_AWAKE 3.3 PPVDDCPUSRAM_AWAKE 0.79...

Hi guys this A1990 arrived with the right hub burned. U3200 and U3100 were replace since they were not generating PP1V1_ LDO. now all LDOs are present but still have 5V steady in all hubs. PPBUS_G3H 12.23V PP3V3_G3H_RTC_X 3.37V PP5V_G3S & P5VG3S_VSW 0V PMU_ONOFF_L 3.37v PM_RSMRST_L &...

Its working !!!!! To recap... UB400 was shorting USB_UPC_TB_F_N that's why LB400 had 0.00V on diode mode in pins 2 & 3. Testing again the USB M&K, we found external mouse activity only in one USB-C hub by connecting the adapter upside down which lead us to test once again with new USB-C...

Yes, you are right, I did check like that the diode mode values, I'm using a fluke 107. Once I replaced UB400 I got the following differences in values: JB500 USBC_TB_USB_TOP_P OL USBC_TB_USB_TOP_N OL USBC_TB_USB_BOT_P OL USBC_TB_USB_BOT_N OL LB400 1.- 0.53 4.- 0.53 2.- 0.53 3.- 0.53 I still...

So... I have a short on USB_UPC_TB_F_N (I removed RB253) I will replace UB400 and will update (TOP/BOT) diode mode values as well as L3000/200 and LB300/400

J3300 USBC_XB_USB_TOP_P 1.31 USBC_XB_USB_TOP_N 0.89 USBC_XB_USB_BOT_P OL USBC_XB_USB_BOT_N OL USBC_XA_USB_DBG_BOT_P OL USBC_XA_USB_DBG_BOT_N OL USBC_XA_USB_DBG_TOP_P OL USBC_XA_USB_DBG_TOP_N OL JB500 USBC_TB_USB_TOP_P 1.92 USBC_TB_USB_TOP_N 0.00 USBC_TB_USB_BOT_P 0.75 USBC_TB_USB_BOT_N 0.75...

We did try a couple of USB-C hubs, new ones and from a working mac. where should I start to check the USB 2.0 lines?

Hi guys, I'm working on a Macbook pro 15 inch 2017 A1707 that fully works but external USB mouse and keyboard. all the USB-C ports work, charging, Hard Disk & HDMI. We have tried safe mode, external HD with different OS versions & different USB-C original adapters. Magic mouse works fine as well...

Yes, I'm sure. PM_RSMRST_L is not pressent if the computer is off even if it has charger + battery conected. Once the power button is pressed PM_RSMRST_L goes to 3.29V

Wile doing the drop pulse check at PM_PWRBTN_L by triggering SMC_ONOFF_L this Macbook pro A1707 turned on ! since then its been working like a charm ! @2informaticos what sorcery is that ?! :) - Thank you very much ! I'm posting the values you requested for future reference. PM_BATLOW_L...

Just tried a known good battery from a working mac and a new battery . unfortunately this board still doesn't want to work, although there was an improvement. With the charger + good batteries, PP20V_USBC_ keeps the 20V and shows the low battery icon. the down side now is that it doesn't boot...

Ok, I will try and will go back to update the post. Thank you, have a good weekend !

Any suggestions ?

Yes, I still get low battery icon only powered with the charger (original 96W) in all USB-C ports yes, I connect the data cable when tried battery. without data cable reacts the same as without battery. How the "low battery icon" circuit works?

So, If LDOs are present what could it be the next suspect?

Voltage on all LDOs: U3200 PP3V3_UPC_XB_LDO 3.370 PP1V8_UPC_XB_LDOA 1.796 PP1V8_UPC_XB_LDOD 1.796 PP1V1_UPC_XB_LDO_BMC 1.1 U3100 PP3V3_UPC_XA_LDO 3.382 PP1V8_UPC_XA_LDOA 1.793 PP1V8_UPC_XA_LDOD 1.806 PP1V1_UPC_XA_LDO_BMC 1.1 UB400 PP3V3_UPC_TB_LDO 3.387 PP1V8_UPC_TB_LDOA 1.802...

Thank you very much ! I don't see a significant difference between the readings on diode mode... U3200 PP3V3_UPC_XB_LDO 0.476 PP1V8_UPC_XB_LDOA 0.488 PP1V8_UPC_XB_LDOD 0.454 PP1V1_UPC_XB_LDO_BMC 0.471 U3100 PP3V3_UPC_XA_LDO 0.477 PP1V8_UPC_XA_LDOA 0.492 PP1V8_UPC_XA_LDOD 0.458...

Hi, this is my 1st post ! This 2017 macbook pro 15" shows low battery icon on screen powered only with the charger in all 4 tipe-C ports. With the charger + battery, PP20V_USBC_ is pulsing from 5V to 0V on 3 ports, the port managed by UB400 gets 20V and shows apple logo for 2sec and then turns...