Apple MacBook Pro 16-Inch 2019 - A2141 - stuck at 5V

[martyjelen]

Is this measurements ok?

[martyjelen]

[B]PPVBUS_USBC_XA[/B] - 0,171
[B]USBC_XB_CC1[/B] - 0,622[B]PPVBUS_USBC_XA[/B] - 0,171
[B]USBC_XB_CC1[/B] - 0,622[B]PPVBUS_USBC_XA[/B] - 0,171
[B]USBC_XB_CC1[/B] - 0,622[B]PPVBUS_USBC_XA[/B] - 0,171
[B]USBC_XB_CC1[/B] - 0,622

[martyjelen]

Same

[martyjelen]

edited

[B]PPVBUS_USBC_XA[/B] - 0V
[B]PPVBUS_USBC_XB[/B] - 5Vedited

[B]PPVBUS_USBC_XA[/B] - 0V
[B]PPVBUS_USBC_XB[/B] - 5Vedited

[B]PPVBUS_USBC_XA[/B] - 0V
[B]PPVBUS_USBC_XB[/B] - 5Vedited

[B]PPVBUS_USBC_XA[/B] - 0V
[B]PPVBUS_USBC_XB[/B] - 5Vedited

[B]PPVBUS_USBC_XA[/B] - 0V
[B]PPVBUS_USBC_XB[/B] - 5V

[martyjelen]

I noticed that when I connect USB-C to J3330 now after 2 seconds voltage drops to 0V. This doesn't happen before. Maybe I damaged chip? 🤔

[martyjelen]

One of my PC USB port not working. I tried another and it works now. Sorry for that.
I reflash original ROM but still gets 5V.

[martyjelen]

Thank you. I must set somehow that AsProgrammer can communicate with my USB ROM assistant.

[martyjelen]

But i don't have any experience with flashing ROM. Must check some informations about it....

[martyjelen]

[B]I2C_PWR_SCL is 1,8V
I2C_PWR_SDA is 1,8V[/B]

I have [B]U301 USBC ROM Programmer. Could it be used for this package? [/B][B]I2C_PWR_SCL is 1,8V
I2C_PWR_SDA is 1,8V[/B]

I have [B]U301 USBC ROM Programmer. Could it be used for this package? [/B][B]I2C_PWR_SCL is 1,8V
I2C_PWR_SDA is 1,8V[/B]

I have [B]U301 USBC ROM Programmer. Could it be used for this package? [/B]

[martyjelen]

[B]PP3V3_UPC_XB_LDO[/B] is 3,38V[B]PP3V3_UPC_XB_LDO[/B] is 3,38V

[martyjelen]

Hello, mon2. Nice to see you.

Resistance to ground on [B]PP2v5_NAND_SSD0[/B] is 1,5MΩ (measured on C9587)
Resistance to ground on [B]PP2v5_NAND_SSD1[/B] is 0,6MΩ (measured on C9586)

btw, device is not detected in DFU when I plug it.Hello, mon2. Nice to see you.

Resistance to ground on [B]PP2v5_NAND_SSD0[/B] is 1,5MΩ (measured on C9587)
Resistance to ground on [B]PP2v5_NAND_SSD1[/B] is 0,6MΩ (measured on C9586)

btw, device is not detected in DFU when I plug it.Hello, mon2. Nice to see you.

Resistance to ground on [B]PP2v5_NAND_SSD0[/B]

[martyjelen]

[B]PP2v5_NAND_SSD0 and PP2v5_NAND_SSD1 are missing.[/B]

[B]PP2v5_NAND_SSD0 and PP2v5_NAND_SSD1 are missing.[/B]

[martyjelen]

Hello, I have this Macbook A2141. It stuck at 5V / 0,075A. I measured all 4 ports, all the same. [B]PPBUS_G3H [/B]is present but only 12,3V. Should be 12,6V ? according to this article : [url]https://repair.wiki/w/MacBook_Pro_A2141_Not_turning_on,_0.00-0.05a_current_draw_at_5V_repair[/url]

PP3v3_G3H_RTC_X is present - 3,3V

PP3v3_G3H_SOCPMU is present - 3,3V

What else should I check?

Thank you for your help.Hello, I have this Macbook A2141. It stuck at 5V / 0,075A. I measured all 4 ports, all the same. [B]PPBUS_G3H [/B]is present but only 12,3V.

[martyjelen]

Hello, I have laptop Lenovo ideapad D330-10IGM which won't turn on. It was water damaged, but as I know it was clear water. I cleaned the board already.

Now, I noticed, that some component is heating up (see picture) there is a code GAASKJ on it. I don't really know what component is this and what is it's function.

It seems that charging works normally because current draw is about 1A and voltage is 19V.

Could you help me with it?

Thank you

BTW there is a flux on component. No damage.

Martin[ATTACH]313257[/ATTACH]...

[martyjelen]

Re: A2141 - 5V/0A - liquid damage

[b]0Ω[/b]Re: A2141 - 5V/0A - liquid damage

[b]0Ω[/b]

[martyjelen]

Re: A2141 - 5V/0A - liquid damage

So, it really reads 0,9Ω-1Ω from PPBUS_G3H > ground.

[martyjelen]

Re: A2141 - 5V/0A - liquid damage

I can select ranges. Did you mean that 1ohm reading from PPBUS_G3H > ground?

If I change range to kΩ, it shows 0,001kΩ

[martyjelen]

Re: A2141 - 5V/0A - liquid damage

Seems OK, there is more than 1k ohms.

[martyjelen]

Re: A2141 - 5V/0A - liquid damage

There is nothing. 0V.

[martyjelen]

Re: A2141 - 5V/0A - liquid damage

I set limit to 5A. Current draw is still 750mA.