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This 820-3478 Logic Board I have will not display to an external monitor. After further inspection of the Logic Board under the microscope I noticed U3015 to have a dark spot, it looked burnt. I went ahead and desoldered U3015, I also desoldered U3020. When I test each pad under those chips...

I'm ready, thanks for the luck. Which should I do first? CPU or RAM? Which do you "think" it is?

Also, thanks for the opinion of Dukefawks, I agree however in my opinion all Apple Logic Boards are garbage.

I'd like to repair it, I have all the tools needed to professionally repace the CPU & RAM. What next step should I take on this?

I did try another SSD, that's not it. When it wants to turn on it will boot to an external USB drive with Mac OS loaded, it will also boot to a known good internal SSD, it will also boot to the original SSD, when I test the original SSD in another perfect Mac of the same model the SSD tests...

Logic Board won't boot sometimes. When it does and I get it into OS, this is what I get. *** MCA Error Report *** CPU Machine Check Architecture Error Dump (CPU: Intel(R) Core(TM) i5-7360U CPU @ 2.30GHz, CPUID: 0x806E9) Core: 0 IA32_MC3_STATUS=0xFE00000000800400 IA32_MC3_CTL=0x0...

Thank you 2informaticos! It worked! This Mac is a happy Mac again! Can you please make the above files unavailable, that way the serial #'s do not get duplicated out there. Thanks!

Yes, I installed my original and the machine turns on, shows an image, will boot to user-id & password screen but is slow and I cannot complete booting into the desktop. After having no power, short on PP3V3_SUS, replacing U1100, the short removed after replacing U1100, then getting the machine...

Hi, can you retry and clean my original bin and send it to me?

How do I remove the underfill on UB300? **UB300 is getting hot and I am sure it needs to be replaced in order for this board to shoot back to 20V. Any advice on the underfill would be much appreciated.

Let me know when you have time. Thank you!

With your file, the system turns on, fans spin but nothing else. With your file, the CPU/GPU/PCH stays cold. With my original file, all those turn on.

I have an 820-00928 that had a short in the PCH, PP3v3_SUS was shorted, once I replaced the PCH the short was gone and the system turned on. Just need the ME region cleared now. Here is the BIN: https://drive.google.com/file/d/1M0BTHtQI9epDfCvHfFAa8qnJoc4KXs3T/view?usp=sharing Please can...

I'm not sure where to start with this one. No liquid damage, and it is very clean. The issue is when it boots to OS the screen gets distorted but shows fine during boot up. If I plug in an external monitor the external monitor displays fine and also makes the internal display fine. Once the...

Thanks but now the system doesn't boot. I tried it two times, the system only spins the fan for 5 seconds and then restarts. I installed the original bin and it turns back on but hangs on the Apple Logo so I know my soldering and loading the bin is good. Can you please retry and only clean the...

Please, can someone clean the ME REGION on this EFI/BIOS? Please clean this bin and not just upload a clean version. This bin is original to this Logic Board I am working on. The reason I need CLEAN ME is I just replaced the PCH/Intel Graphics because it was cracked. Now the system boots but...

Tested this bin, ME REGION is CLEAN and is confirmed working! Thank you! This is why I love these forums! Keep up the great work!

Thank you very much, great job, the Logic board is working perfectly now.

Please don't forget about me

Ok, that would be much appreciated.