Hello, I have a macbook a1706 (820-00923-A) that does not turn on, the 20v ubc triggers but no power consumption, no short and no liquid damage, PPBUS_G3H: 0V15 (16mohms no short), U7000 is well powered by the 20V, I looked at everything around the ISL9239 chip the resistors are good, so I replaced the chip twice but the result is the same, my skills stop there can you help me please?
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What are the voltages to ground of the following points?
TBA_VDDA
TBA_VDDP
TBA_AUX_DET
TBA_CSI_P
TBA_CSI_N
SMBUS_SMC_5_G3_SDA
SMBUS_SMC_5_G3_SCL
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These look ok to me. Flux and remove the fuse @ F7000. Power up again with the adapter. What voltage do you measure at the removed fuse F7000, pcb pad #1 = ISL / producer side of this power rail.Comment
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Hi everyone. Got MacBook Pro 13 2016 A1706 w/ Touchbar (820-00239) with strange symptoms. It draws 20V/1A from the charger (w/o battery connected), CPU gets reasonably hot, the fans start spinning (when the CPU reaches some temp threshold), but no image, no sound, no backlight, no touchpad clicks, no keyboard backlight (also no response to CapsLock press), no image on external display (through working dongle and HDMI). The laptop chargers the battery with no issues. Also the laptop reacts to power button like it should be: it kinda "turns on" (the fans start spinning) when on battery... -
Hi all,
I have an A1706 that was liquid damaged, the logic board turns on and works when the battery connector is not plugged in, but when the battery is plugged in, the computer is stuck on 5v @ 30-40 Mah, and USB-C meter will reboot every 5 sec or so, pressing and holding down the power button will make the USB-C meter to stop boot looping, and if you keep holding it, fan will quickly spin up and turn off.
when the battery is unplugged and plug in the charger then plug in the battery it will stay on 20V and 1.6A-2.6A but when you unplug the charger, the computer... -
Hi all. help with diagnosing Macbook A1706. 820-00239-A. doesn't see SSD. question mark folder. runs from an external drive. All power supplies are normal except for the SSD power supply.
PICCOLO_IUVD=1.834v.
PP3V3_S5_SSD=3.352v
PP3V3_2V7_NAND_VCC=0v.
PP1V8_SSD_COLD=0v.
PP1V2_SSD_COLD=0v.
PPBUS_G3H_R=13.08v.
PPDCIN_G3H_CHGR_R=19.90c.
PPVIN_G3H_P3V3G3H=19.65v.
SSD_BOOT_LB_L 1.8V
SSD_PWR_EN_LB_L 0V
STORAGE_LB_EN 3.33V
SSD_RESET_LB_L 3.32V
SSD_PCIE_CLKREO_LB_L 3.32V
LPSR_EN_LB_L 3.32
replaced... -
Hi., today working on a Apple MacBook Macbook Pro A1706 (Board part # 820-00239-A) not turning ON with battery. The notebook turns on 100% fine with USB-C Power adapter (NO BATTERY INSTALLED), boots up well & all seems to be perfect. I connect J6950 to the main battery terminal & it's fine, boots up well but does not work with battery as till now the MB did not detect the battery & no battery icon shows up. As soon as I connect the BDM battery flex cable to J6951, the ampmeter display goes on & off & takes only 5v & this is in a loop (display comes & goes after detecting... -
Hello everyone,
I received a MacBook Pro 13 inch from a friend for repair
Model: A1706 820-00239
The device shows no reaction to the power button,
no water damage, no optical problems, nothing noticeable.
It was closed working and since then it has been dead.
I have already checked the following:
1) With battery connected:
Charging via USB-C on all 4 ports OK Voltage PPDCIN_G3H goes to 20V, PPBUS_G3H to 13.1V.
2)Further measurements without battery and other components except USBC power supply
PPDCIN_G3H...
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