Recent content by isa1985

What else can I try?

Actually, only the USB port and the power button were connected, but I still removed it from the case and tried it that way as well. Nothing changed, everything stayed the same.

Без батареи все почти так же. Сначала он ненадолго показывает 5 В и 0,12 А, затем переключается на 20 В и 0,15 А. Через 5 секунд он перезапускается, затем остается на 20 В и 0,00 А, и больше ничего не происходит. Когда я нажимаю кнопку питания, весь процесс начинается заново.

Does that mean the device is beyond repair?

Will it be clear if I desolder the SSD storage?

820-02841 its atached

Macbook Pro A2779 820-02841 No Power The board is clean, no signs of water. When I connect the power supply, L5230 immediately heats up to 40 degrees. I will also upload the picture. The ammeter shows 20V and 3A. When I press the power button, it restarts itself

Correct

Hey everyone, I have a MacBook Air with a battery that isn't charging. On U3200 (PP20V_USBC_XA_VBUS), I'm getting 20V but 0A, and on U3100 (PP20V_USBC_XB_VBUS), I'm seeing 5V at 0.264A. Can anyone recommend a solution?

I found the problem. QP800 actually looked fine, but when I inspected it under a microscope from the side, I saw that it was blown. I removed the QP800 from an 820-02020 board. According to the datasheet, they seem quite similar, but I would kindly ask you to verify this. Although they are...

I'm glad to hear from you, as I thought you probably didn't want to hear from me anymore. No, the backlight is still not working.

Could you please help me with what else I should check or what further steps I can take?

I found the problem; it was the JP900 LCD connector. I cleaned it, and now when I measure resistance to ground with and without the LCD, it starts at 550 kOhms and keeps increasing endlessly. I also tried with another multimeter and got the same result.

With and without the display, it is 0.00 Ohms.

As I mentioned at the very beginning, LUXE_AGND, LUXE_ISL_R_P, LUXE_ISL_R_N, and GND are shorted together. I don't want to make any mistakes, and I'm very grateful for your help. I've now soldered UP800, so please let me know how I should proceed. I have a thermal camera to find out where things...