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it is absolutely shorted, i recognized it by burning my finger. Where can i find the specs to this part? I would like to change and give it a try.

I have this board for repair with water damage. All cleaned and the ugly parts exchanged. Now i get the following components very hot when i put 3 volts on them : C2901 C3101 C2300 as well as the RAM blocks. Any suggestions? PP3V42 ist present and stable, i have green light as well. F7040 is...

Solved by installing a new keyboard, all is running properly! Thank you a lot. The next one is lying on my table..

I tried several times to put in again the flex cable of the keyboard, i also cleaned it and the connector. Nothing changed. I will order a new keyboard and try with that one. If it doesnt work, should be a problem on the logicboard. UPDATE: Macbook started with one of my HDD that already has...

Ok i will check it, as i tried a smc reset, it doesnt answer on the keyboard combination. One more sign on a fault by the keyboard. I will keep you up to date. Thank you

Hey Dudefawks, i am very thankful for your help and can present a first success. I tried powering up by pads, it is working and showing me the question symbol.I am not sure if i should hear any sound before installing any operating system. Before going on (i forgot to take the screws for the...

Today the ic reached me and was soldered in. Macbook not turning on, but it seems that i am a step further. Battery is charging, F7040 with 12,0 V. What is the next step? should i measure all Rails now?

Power Supply arrived and was connected to board. I put 5Amps inside and recognized C7417 was burning my finger. I will order this piece. Short on F7040 is gone. R7010 is giving me now 30kOhm. Would that part fit to C7417 ...

Will 5 Amps be enough?

Thank you for your response. I ordered a laboratory power supply with 0-30 V and up to 5 amps. After it arrives i will try to figure out the shorted part and let you know.

Ok how can i find out now which part is shorted, if i don't have any power supply?

Ok i unsoldered F7040. When i have the RAM Memory downwards the lower pad(closer to battery connector) of F7040 is not grounded, so not shorted. This pad comes from DC-IN. The upper pad (leaving the Fuse) with the name PPBUS_G3H is grounded(means shorted?) I did now the following try with one...

I will check that and let u know

How? Plus on just one side of F7040? GND is clear.

I do get 0.8 as result for resistance with no power and grounded before. Update : In diode mode i have a connection between F7040 and GND. shorted? SMC_BC_ACOK seems to be grounded at U7000, but at U6901 it is not. Update2 : As i watched one more video about a problem with PPBus_G3H repair...

Both 0 Volt. Thank you so much for your help. If F7040 has no voltage, does that mean that PPBUS_G3H is down? F6905 has 16,5 V as well Update: i measured following voltages on U5010 : -PP3V3_S5 3,41 Volt -PP3V42_GH3 3,41 Volt U7600 -no voltages at all. U7870 looks really strange, the...

Pins of the J6900, the main power plug.it doesnt to seem a liquid damage. No corrosion is visible. Is it possible that it doesnt switch on if the gpu has a bga problem?

Hey there and first of all thank you for all the helping videos on your youtube channel. Actually i am stuck with the logicboard of the topic. it shows green light but does not switch on. i have 16,5 volts on pin 1 &2, ground on 3&4 and i get 2,85 V on pin 5. Please help me fixing the board, i...