Search results

http://web.archive.org/web/20200202143909/http://honestgeek.ca/2018/10/19/asd-for-2015-systems/

When the battery is disconnected inside a MacBook, in general the CPU cannot use Turbo Boost. Even worse, it may be throttled below the base frequency. Intel Power Gadget should make it clear if boost is working or not. If the machine crashes only when hitting boost clock, there's probably a...

The fan profiles are always very conservative on MacBooks so the fan only runs at full speed if it gets close to throttling.

Nothing wrong with 90°C. If CPU stays at 100°C or above with fan at full speed under load, then you have a problem. If it stays below 100°C then everything is fine with cooling system. You can use Intel Power Gadget to monitor CPU temp, usage and frequency to see the boosting behaviour on...

You could try erasing from Linux. I had one case where I wasn't able to erase SSD from macOS (Disk Utility or from Terminal) but after erasing the beginning with dd from Linux, I was able to format and reinstall macOS without issue. Remember that working on these boards isn't the best idea as...

https://www.win-raid.com/t1658f39-Guide-Clean-Dumped-Intel-Engine-CS-ME-CS-TXE-Regions-with-Data-Initialization.html

https://www.badcaps.net/forum/showpost.php?p=1026999&postcount=18

Replaced touchpad cable yet?

Just as a reminder you need a known good battery connected for this machine to fully boot into macOS.

https://logi.wiki/index.php/Schematics_and_Boardviews_Availability#iMac

Board should work with DC-in FFC disconnected but will throttle hard so it'll be extremely slow. (and of course no green light, fan spinning at full speed and no audio)

Select Continue on errors.

Voltage on PPVTT_S0_DDR, PP0V75_S3_MEM_VREFDQ_B, PP0V75_S3_MEM_VREFCA_B SM_RCOMP resistors Most likely they'll all be fine and it'll be a RAM or CPU issue though…

If it works properly when plugging in DC-in FFC after turning it on without it, it's very likely caused by SMC not liking the Magsafe and pulling PM_BATLOW_L low.

Open 2 threads for 2 different machines with different problems otherwise everyone will get confused. If you suspect touchpad then just unplug it and see if the other sensors read correctly again. If you are regularly repairing MacBooks you need to get some spare parts, in this case a spare...

Right click → Open like for most apps downloaded outside the App Store. That CPU is from an 820-00165 board, not an 820-3437 board like you said in the original post. In any case this i5-5250U boosts up to 2.5GHz all cores, so if you don't see it get to that frequency when stress-testing then...

Of course you are using a genuine Apple Magsafe2 that's known to work with other 11"/13" 2015 boards right?

Did you check the link I posted above? Of course you need to plot the graph while running a CPU stress test software.

kernel_task taking 400% CPU time is forced software throttling. There's also hardware throttling that prevents the CPU from boosting or keeps it at the lowest core clock, can be seen with Intel Power Gadget: https://logi.wiki/index.php/Throttling 820-3437 is 2013-2014, 820-00165 is 2015-2017. I...

https://support.apple.com/13-inch-macbook-pro-solid-state-drive-service