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Any other suggestions, the LCD works fine with my donor board so its not a LCD issue , do you Think J9000 fpc might be my issue , I am seeing it like it was forced i am not sure if It has inner pin isse , should i just replace j9000 FPC connector?

But I have another donor board which is coming on , I tested the LCD on the donor board and it powers on normal.

LCD_PWR_EN = 0.012V and pin 2/3 of J9000 = 0.00V I dont have a display port adapter for that Model.

Pins 6&7 with lcd connected is giving 3V , That laptop does not have HDMI lcd connector to try an external LCD , I will try that tomorow or if you have another method to connect an external video you can please give me the tips to do so , next thing , How do i disable GPU?

No I have not tested any external video yet , Pin 6&7 diode mode reading is 0.473 both pads and voltage is 1.8V , I reviewed L9010.11 they are looking good and all the resistors are also looking fine but i did not test them.

Yes, 3.3v is present at pin 4 of J9000.

That Macbook came in with minor water damaged, some rails were cut off I was able to run jumpers to reconnect all the lines but apparently macbook is coming on ok but without any images or backlight, the caplocks on the keyboard light is on but there s no display or back light, I checked diode...

Right LDO1=0.00V and its diode mode reading to ground is 415

I am looking for a U7800 but apparently I can't find any do you have any sites selling those ?

LDO1 = 415 in diode mode to ground, should i change U7800?

Here s what i have now . V3P3= 2.8V LDO0_IN = 0.00V LDO1_IN= 3.3V LDO2_IN=0.00V VIN_RTC=3.3V LDO0=0.00V LDO1=0.00V LDO2=0.00V LDO3=1.795V LDO_RTC=1.493V VOUTRTC=3.3V

both are present

U2800 was replaced but still no 20V on my USB amp meter all the 3V3 Lines are ok included PP3V3_TBT_X_SX that was shorted earlier, Please suggest what might've been my issue.

Just a quick Question i have , I found U2800 From a A1989 Macbook but both chips marked Intel E1 but the numbers are a bit different The one that i am working on the marking is : T803A900 which is shorted , and the one i am harvesting from the A1989 marking is U803G901 Let me know if that...

ok will do

I Realised that i dont have a donor , do you know where i can get U2800 for that type of Board?

I will definitely do that. Will keep you posted.

Can U2800 be replaced or only reballed, U2800 PP3V3_TBT_X_SX is my problem, let me know if that chip is not an encrypted chip , so that i can either change it or reball . Keep me posted, Thank you very much.

Earlier when i tested 3V3_G3H_RTC was not present, but PPBUS_G3H was always 12.26V I dared to replace U6903 Was just for a test since then 3V3_G3H_RTC is present as well as PPBUS_G3H , But I found out U3200 gets super hot when USB Amp Meter is connected on one side , on the other side...

Here are U7800 Voltages now ,\\ LDO 00 _IN = 0.004V LDO1_IN = 1.218V UNSTABLE LDO2_IN = 0.00V LDO_CORE = 0.001V LDO00 = 0.00v LDO1=0.00V LDO2 = 0.00V LDO_RTC= 0.008V LDO3=0.001V V3P3 = 0.370V VIN_RTC=0.812V UNSTABLE VOUT_RTC= 0.370V