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820-01700 Wont charge 5V 0.280A without battery 20V with battery.
- Thread starter No-Clean
- Start date
"PP3V3_UPC_XB_LDO 3.3V
PP3V3_UPC_XB_LDO 1.5"
What do you mean?
Did you check diode mode to ground on coils?
Is the machine recognized into DFU?
PP3V3_UPC_XB_LDO 1.5"
What do you mean?
Did you check diode mode to ground on coils?
Is the machine recognized into DFU?
No-Clean
Member
Sorry for the lack in information, this Mac boots fully with charged battery and I get 20V with battery installed but 0A so it wont charge, board alone takes 5V and 0.280A, T2 revive works all the way to the end but no change.
I dont even know where to start, but I just replaced U7000 and same thing.
Please advice.
I dont even know where to start, but I just replaced U7000 and same thing.
Please advice.
In this case you have a problem on USB-C area.
Compare diode mode readings and voltages between the 4 channels.
Did you test with correct (96/140W) charger?
Check UPC_I2C_INT_L signal.
Compare diode mode readings and voltages between the 4 channels.
Did you test with correct (96/140W) charger?
Check UPC_I2C_INT_L signal.
No-Clean
Member
Yes 96W charger used.
All 4 CD3217 were replaced from same donor board that had 20V
Already replaced from donor board U2890 and UB090
UPC_I2C_INT_L is 0V Diode 426 with board alone
Just in case I2C_PWR_SDA/SLC 1.8V with correct Diode read
Diode and voltages
PP3V3_G3H_RTC_X 3.3V 460 Diode
PP3V3_UPC_**_LDO in all 4 ports 480 diode and 3.3V
PP1V5_UPC_**_LDO_CORE in all 4 ports 520 diode and 1.5V
What else should I check
All 4 CD3217 were replaced from same donor board that had 20V
Already replaced from donor board U2890 and UB090
UPC_I2C_INT_L is 0V Diode 426 with board alone
Just in case I2C_PWR_SDA/SLC 1.8V with correct Diode read
Diode and voltages
PP3V3_G3H_RTC_X 3.3V 460 Diode
PP3V3_UPC_**_LDO in all 4 ports 480 diode and 3.3V
PP1V5_UPC_**_LDO_CORE in all 4 ports 520 diode and 1.5V
What else should I check
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"UPC_I2C_INT_L is 0V"
That is the problem; should find why stays low.
Any CD3217 chip can pull it down, if detects a problem on its area.
That is the problem; should find why stays low.
Any CD3217 chip can pull it down, if detects a problem on its area.
The problem is not on UPC_I2C_INT_L line; unless R5246 is bad (open), or have corrosion between pads of J3000, or JB200.
This line is used to report problems on USB-C power channels.
You may have just a bad resistor, or broken trace; possibly input ESD diode damaged also.
Check diode mode to ground on J3300 and JB500.
When working on battery, do you get USB activity on all ports?
This line is used to report problems on USB-C power channels.
You may have just a bad resistor, or broken trace; possibly input ESD diode damaged also.
Check diode mode to ground on J3300 and JB500.
When working on battery, do you get USB activity on all ports?
Check L3500 and LB700 areas.
You should get 5V one coil, according with connected port.
You should get 5V one coil, according with connected port.
L3500 should get voltage when you connect the device on working port.
No-Clean
Member
Ok I have P5V_G3S missing and U3500 needs that in order to work, when I check U7650 I see that P5VG3S_EN_R missing, following that P5VG3S_EN is missing too as well as PMU_PVDDMAIN_EN and that only comes out of PMU, all AWAKE and SLPS2R signals are present, so far this is what I got, would that mean PMU is the problem?
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Do you get 1V8/3V3_G3S?
These (and also 5V_G3S) must appear before S5 state.
These (and also 5V_G3S) must appear before S5 state.
I'm wondering how this machine boots with all these missing voltages...
No reason to check for L3500, or LB700 voltage if board didn't boot.
Use a spare battery and test the board on the desk.
You should still inspect USB-C areas to find the main problem.
Remove the USB-C ports and check their terminals.
Use a spare battery and test the board on the desk.
You should still inspect USB-C areas to find the main problem.
Remove the USB-C ports and check their terminals.
No-Clean
Member
In its case board does indeed still boots fully, 20V with battery connected but wont charge.
Left side has USB voltage and activity, right side is missing both, this gives me something to look for.
With battery alone no trackpad I still dont get voltage on those 2 coils (remember this board requires battery and trackpad to boot fully)
All my testing is done with new know working C ports
Left side has USB voltage and activity, right side is missing both, this gives me something to look for.
With battery alone no trackpad I still dont get voltage on those 2 coils (remember this board requires battery and trackpad to boot fully)
All my testing is done with new know working C ports
Your problem should be on USB-C right side...