Recent content by waterchill

I have actually a M2 for testing but this layout is different. Maybe someone will read this topic and can tell me what is the behaviour without nands.

Thanks for quick answer. Is there a schematics for this board?

Hi, I have upgraded a M3 Air Macbook from 256GB to 2TB and now it is dead. I did this upgrades to M2 and M3's several times without any issues but this time board is dead. Voltage goes up to 20v after some seconds goes to 5v then to 0v abd goes up to 20v. This behaviour is repeating. It looks...

I'm also missing the point "Enclosure" 🤔

Juist managed to login and started TG pro. It says GPU and hard drive temperature sensors may not be working properly. But temperatures looks ok.

I tried this mainboard in complete functional top case and still same. Also tried a working one in this top case, is also working. So it looks like it is a mainboard problem. C7020 and C7023 is both about 2,5 ohms. SMC_AVREF = 1,25V Bott in safe not possible, it is loading till 70% and then it...

Good day friends, I have actually this board here and I don't really know where to start to search. Sometimes it power on with apple logo and it is booting with full fan speed and very slow. Sometimes it is drawing current about 600-700mA fan full speed and nothing happens no screen. Tried to...

Yes measurment was correct. What is eDP for? Is a cpu swap a solution for this?

I have some update on this board. I found a mess/short under the onboard display connector see pictures. Unsoldered the connector all pins are fine. Because I have not diode values of exact this board I took values from the A1989 board. Pin 1 and 3 are oL. These are connected directly to cpu. So...

I have ordered now a new bios original programmed bios chip. Will also change the U3100 and the Q3100

Schematics says Q64FVBYIQ this chip here is Q64FVYIQ this is looks the same. Also Alixpress sales this as the same. This chip I bought 5pcs was sold as the rom for A1534. What I have tried now is multiple times changed the chip, erased sold again, nothing changed. Also tried power without this...

Not possible to solder in same orientation because the chip is little bit different. I have to rotate the chip by 90 degrees. File is double checked

I have now replaced the SPI Rom, it's not an quick job, because you have to solder and reball after programming. Noticed that there are 2 kinds of chips. Didn't got the original one, but it is possible to turn the chip 90° and it is ok. So now the situation is, that I got no voltages. The only...

Hi, I have same error. Did you solved the problem?

The measurments were taken only board nothing connected. With battery connected the charger do instantly 20V. But error is same, doesn't matter if all components are plugged in or not. I found this topic here...