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Yes, tried with all 4 ports. This https://boards.rossmanngroup.com/threads/how-to-read-write-erase-apple-efi-spi-rom-with-raspberry-pi.2455/ method should work right?

Hi, I have this board which apparently had liquid damage and been cleaned afterwards. At least now there is nothing visible anymore. Voltmeter says 20V at 500-650mA. ALL_SYS_PWRGD is 3.2V, PPBUS_G3H and _S0 rails present. Also PPVCC_S0_CPU and PPVCCSA_S0_CPU present. No USB activity. CPU gets...

Ok, thanks

Any way to find out which BGA chip or which to rule out? Or isn't it worth the trouble?

OK, i Just got a reply. It fell on the floor.

Unfortunately i don't have any info. The seller on ebay doesn't reply.

I created an external drive with macOS as you said and don't have USB activity (blinking Link LED) on this board. What now?

Thanks. If I plug in a battery powered controller on the second port with the voltmeter, it shows 4.7V and 0.4A. I assume this is what you mean by activity (didn't really find a description)

Hi, This is what i gathered so far about this board: - No liquid damage visible - No image, no chime, no trackpad clicking, no caps led - No image on external monitor - 20V at USB-C Voltmeter, The current goes to ~500mA at first, after a couple of seconds goes down to ~220mA and stays there -...