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Yes, I ran MRI 64bit...

Running the MRI test shows yellow exclamation mark at "Apple Diagnostics", red exclamation marks at "Battery", "Fan" and "Sensors" and it hangs at the phase "Testing sensors" ...

Hello everyone, I got this Mac and it is on the slow side. Internet diagnostic feature shows error codes PFM006 and PPN001. Board looks clean. I replaced I/O board, nothing changed. Any ideas?

And after changing the ISL another time, it worked! Battery is charging beautifully! You can close this case. Thank you all for your help.

I changed ISL with new one, took Q7130 and Q7155 from Aliexpress doner board, and now I get an on/off green light flashing every other second. Fan is spinning. I took another pair of Q7130 and Q7155 from a known good board, same green light flashing.

That was the first thing I did, no luck...

So I took another MacBook apart and put this logic board in. Same thing, it does not charge a known good battery. Will change these three chips you are proposing and get back to you tomorrow.

unfortunately I have no other battery to test. I changed the MagSafe board and PPBUS_G3H measured on R7005: charger and battery: fluctuates between 12.50 and 14.50 or so within a second charger only: 15.39V battery only: 10.92V

Hello, I got this 820-3332 with green light OK, chime OK, no image. I know it has booted into the OS as I can hear the volume up/down adjustment sound. When I close the lid for some minutes and open it up again, I get an image and everything works fine! What do I check? The plastic cover on...

Battery looks good. I got it at 65% capacity. Load cycles are at 921. As I am doing the tests with the charger plugged in, it slowly discharges and is at 33% now. It boots off the battery just fine. I have no other known good battery to test, though...

Hello again, an 820-3476 that does not charge the battery. There was corrosion on pins 22 23 24 of U7100. Also, a burnt trace from pin 23 to C7125. I removed the ISL, cleaned up the area, put a new ISL in, put a wire from pin 23 to C7125. It still sees but does not charge the battery...

Or, can I use my Arduino?

Would this https://www.ebay.de/itm/NEW-TL866CS-Programmer-Adapter-USB-EPROM-FLASH-BIOS-6-Adapters-Socket-Extractor/232681462362?hash=item362ce55a5a:m:mb1ZGy0Nq_st7Newwg_2mAA do the trick? Since this SPI chip has the legs parallel to it, not bent 90 degrees, do I need a special adapter to connect?

Well, I'm pretty new at this and have no knowledge or tools to do this. I know it is off topic, but can you link to a site that will teach me that? Thank you.

No, it looks immaculate.

I can't see anything. Disconnected display, plugged a monitor via thunderbolt. Booted from battery and ASD OS test hangs at the following point in verbose mode: Macx_swapon SUCCESS Booting from USB with El Capitan in verbose mode hangs at: fInterfaceSnapshots is missing Running ASD Efi...

LCD is known good. L9000 is 5V

For some reason now it chimes every time I start it. So with external keyboard I did PRAM reset. I still get no image/backlight. How do I know that I get an image but no backlight, or if I get no image at all?

Is GPU Vcore on L8930 measuring 0,895V correct? What else can I measure?

How could that be? A solder blob between R7745 and C7741? Removed it, bam everything works! Thank you for your help. (Solved)