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I noticed that constant cyclic reboots from the battery. I thought that by deleting 7462 I disabled the connection to the cpu but you are probably right, this is CPU
pin 16 have 3.3
when I put c7450 in place, 0.6 disappears!
I removed the C7415, which is not a good idea, but I saw that pin 6 became 2.5 instead of 1.8 and 0.8 appeared on pin 3.
I replaced the C7415 but the situation has not changed.
Ok, thx
I just removed did not connect (C7450 / 62), now on C7450 0.6v!
pin 17/U7400 = 3.2v
maybe i need to press the chip when soldering (for xw7400)?
Yes, I took the BIOS from this forum (but I also put 2 bios from donors). can you advise Post Card Testeur for macbook?
Removed 7462 and 7450 (0.6v appeared on it). replaced , i put it in its place C7450 and 0.6 disappears!!!!
thx
HI.
I replaced the BIOS firmware with a clean Me Region but no changes.
Could you tell me how to find that Me region is clean, I looked at the 400 and 2400 lines (I have it written that it starts with 2000 and this is true, but at 2400 I only have FF FF).
Thx
U7400, pins 1, 3, 5 there are no short circuits on these lines (infinity).
On all these legs, a strange value of 596.5, I don't know what it is, but it's not 0 like in other cases.
It still does not give 0.6V.
while waiting for the detail, I installed the BIOS from the same donor, should there be at least some changes?
it also turns on but there is no voltage 0.6v
I assumed that there might be Bios, but unfortunately, they do not change the equipment for the firmware. while I'm looking for a solution with bios,
Maybe you have some other ideas that i can check?