Keys must be held down to work
The keyboard of my macbook 13" penryn early 2008 Dual core 2 duo is globally unresponsive.
- Most keys only work if held down for a few seconds.
Interestingly, after holding the a key down, for a few more seconds, the key responds pretty much normally, before becoming again unresponsive to normal touch again a few seconds later.
- Some other keys work fine (e.g. delete)
If using an external keyboard, it works fine.
There was no liquid or other damage to the unit
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