Did you try using a generous amount of isopropyl alcohol (99% pure)?
Try to avoid spilling that onto the keys of the keyboard even though it COULD be harmless.
-
Then you have tear down guided for those devices. Look them up to determine how you can get into them to clean any acid residue and test again.
+
Then you have tear down guides for those devices on iFixit. Look them up to determine how you can get into your devices to clean any acid residue and test again.
Did you try using a generous amount of isopropyl alcohol (99% pure)?
Try to avoid spilling that onto the keys of the keyboard even though it COULD be harmless.
Then you have tear down guided for those devices. Look them up to determine how you can get into them to clean any acid residue and test again.