MacBook Pro 13 (Mid 2014) - Erratic Keyboard and Trackpad
I am having a strange problem with my MacBook Pro (Retina 13in - mid 2014)
All of a sudden the keyboard and trackpad have started to work erratically.
Keyboard works really slowly, I have to type each character multiple times and sometime it just spurts the same key multiple times.
The backlight of the keyboard is also fine.
- press : ee -> e
- press : s -> sssssss
- press : tttttttttt -> t
Trackpad is also almost unresponsive.
I have already tried doing a NVRAM and SMC reset but no change. However, an external USB mouse and keyboard works fine.
I have already upgraded the OS to HighSierra but it didn’t work.
It is a dual boot system so when I boot under Windows 10, it tells me:
Unknown USB device (Set Address Failed) under USB controllers with error code 43 in the error description.
I have already tried uninstalling the drivers under Windows 10 or upgrading bootcamp drivers but of no use.
There has been no water damage and the computer has been used with sufficient care.
I do not think it is a battery swelling issue either since the laptop is holding charge.
Do you think the following guide applies to me?
Is the assembly of Mid2014 version the same?
I just ran the diagnostic (CMD + D) and got the following error:
"There may be an issue with the display
Referrence Code: VFD002"
However, there is nothing wrong with display.
There was no water spill as such.
I did spray a cleaner to wipe my screen some but I do not remember that any moisture went under the keyboard.
The battery seems to be holding power and in good standing. Please see the CoconutBattery results attached.
Update 19th May 2018 @danj
There is no visual deformity on either side therefore I am not so sure if "battery swelling" could be the issue.
I have come across a few forum threads on the Internet where people have put their laptop in plastic bag and have cooled it in the fridge for a few hours just to exclude the battery swelling as the root cause.
Do you think it is a good idea? Would condensation not damage it?
Could it be the problem with Logic board? then why does it work after multiple key presses? Or it is more like a driver / input buffer issue?
Here are two videos to give you an idea what I mean:
All the keys are working but sometimes need to be pressed multiple times.
Trackpad response after multiple swipes.
I have also tried booting into Ubuntu via USB stick, hoping the standard USB drivers might solve the problem but it did not help. Had the same problem under Ubuntu as well.
Update 20th May 2018 @danj
Thanks again Dan for your help!!
Here is a screenshot from TG Pro
after 15 mins
in both cases, no change in keyboard or track pad behavior.
The reason I have not changed the battery is that I am evaluating the following options:
- Selling it as a defective article (around €400) - not preferred
- Having it repaired by some unauthorized shop ( around €300)
- Buying tools + battery only to find out it was not the problem (around €100)
Is this a good question?