Recent content by MeTech Turkey

  1. MeTech Turkey

    820-01521-A with liquid damage but no corrosion starts with 5V then turns and stuck at 12V

    so if it is t2? what should I follow? changing t2 with a new one will sort problem out? Or do I need to do anything if I change t2?
  2. MeTech Turkey

    820-01521-A with liquid damage but no corrosion starts with 5V then turns and stuck at 12V

    R0211 and C0255 is on audio board not on the mainboard.I have changed the U7000 but now I found out that under the thermal camera U7800 flashes on some point and I guess it belongs to PP3V3_G3H line where it flashes. When it flashes it went down to 0 and back to 0.1A again. It starts with 5V...
  3. MeTech Turkey

    820-01521-A with liquid damage but no corrosion starts with 5V then turns and stuck at 12V

    I have just found out that when I plug in the battery connector which is J6950 then starting voltage stucks at 5V but without battery connector plugged in it starts with 5V then jumps to 12V and stays there
  4. MeTech Turkey

    820-01521-A with liquid damage but no corrosion starts with 5V then turns and stuck at 12V

    we have found out that R0211 and C0255 has been corrupted by corrosion. So do you think changing these will sort out the problem? but no short on diode mode. It shows 715 on diode mode
  5. MeTech Turkey

    820-01521-A with liquid damage but no corrosion starts with 5V then turns and stuck at 12V

    Hello my customer brought me a macbook 820-01521-A he said he poured water on it but when we took out the main board didnt find any corrosion depends on a water damage. When we plug the DC cable with all connectors unplugged main board starts with 5V 0.200A then turns to 12.15V 0.00A and this...
  6. MeTech Turkey

    A1278 820-3115-B Screen Turns Off When Lid is Open

    I have connected the screen and BIL and when the lid is closed I get ~0.003V from the second leg of R6961 which is on SMC_LID. And when I open the lid I get 3.4V from the same leg.
  7. MeTech Turkey

    A1278 820-3115-B Screen Turns Off When Lid is Open

    We get 3V w/ and w/o BIL connected from R5071. But please correct me if I am wrong do we need to measure these voltages when screen connected or not? I do really not have any knowledge about this. So please bear with me while answering my questions as I can be called as a newbie in this...
  8. MeTech Turkey

    A1278 820-3115-B Screen Turns Off When Lid is Open

    Check if LCD image stays on disconnecting BIL (J6955). = No it goes again. We have checked the SMC_LID signal with BIL connected and we measured 3.4V, and without BIL it gives 0.003V (around) (I have checked SMC_LID signal without screen connected)
  9. MeTech Turkey

    A1278 820-3115-B Screen Turns Off When Lid is Open

    Hi everyone. A customer brought me a A1278 macbook pro with a screen problem. We found out that LVDS cable needs to be replaced and done it. But now the screen goes off when we open the lid and it turns on and stays on when we close the lid. I have searched on internet and found too many...
  10. MeTech Turkey

    A2337 820-02016 2020 Macbok Air Stays On 5V

    I have sorted the problem out. First I took the LC710 our of the board and checked the legs on diode mode. And found the short line. And it was 3.3V leg. So ı took the board under thermal camera and gave 3.3V to that line and found shorted capacitor. Moved it away. Put the LC710 back measured it...
  11. MeTech Turkey

    A2337 820-02016 2020 Macbok Air Stays On 5V

    LC710 on P3V3S2_SW and PP3V3_S2 gives ground on both legs on diode mode i have checked all big coils and all i found is the one written above i have checked pmu rails seems no problem (i dont know if i did it right, i have checked them also on diode mode) And when I measure it I can see small...
  12. MeTech Turkey

    A2337 820-02016 2020 Macbok Air Stays On 5V

    Okay will do as first thing in the morning and let u know.
  13. MeTech Turkey

    A2337 820-02016 2020 Macbok Air Stays On 5V

    It is 0.676 on diode mode, my fault. Im sorry. It is so busy at the shop and customers took my head off today.
  14. MeTech Turkey

    A2337 820-02016 2020 Macbok Air Stays On 5V

    PPBUS_AON keeps going up and down between 7V - 12V 3V8_AON keeps going up and down between 2.9V- 3.8V RC714 on P3V3S2_PWR_EN jumps from 0 to 0.025 on diode mode
  15. MeTech Turkey

    A2337 820-02016 2020 Macbok Air Stays On 5V

    Hello Everyone, One of my customers brought me a macbook air A2337 , board number 820-02016. When I plugged it in I can see that it stays around 5.170V and amp goes up to between 0.27 and 0.388 and back to zero again. And it is on a loop like this. When I measured the CF505 on...
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