#5658 NORM Ship.2: Sticky Alt or Control Key

[Zarro Boogs per Child]

#5658: Sticky Alt or Control Key
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  Reporter:  davidpfarrell  |       Owner:  wad      
      Type:  defect         |      Status:  new      
  Priority:  normal         |   Milestone:  Ship.2   
 Component:  hardware       |     Version:  Build 650
Resolution:                 |    Keywords:           
  Verified:  0              |    Blocking:           
 Blockedby:                 |  
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Comment(by legutierr):

 Replying to [comment:56 Gabey8]:
 > And to the person who peeled back the keyboard membrane: HOW did you do
 that? And did peeling it back and then replacing it help matters any?

 I disassembled the laptop as described in the wiki here
 http://wiki.laptop.org/go/Disassembly and here
 http://wiki.laptop.org/go/Manual/Insides.

 The first time I did it, it seemed to fix the problem, but a couple of
 days after reassembly, the problem came back.  Then I did it again, being
 much more careful to align the rubber correctly in reassembling the
 machine.  As of now, no problems (we'll see how long that lasts).

 If you look at the rubber portion of the keyboard, there is a grove around
 the edge.  The groove is meant to align with the white plastic encasing.
 In my first reassembly I didn't pay attention to the groove, and I allowed
 the encasing to settle on the thicker portion of the rubber, squeezing the
 rubber against the keyboard circuit-board.  The second time, I made sure
 that the rubber was aligned properly, aligning the groove, but also the 3
 small (1mm) alignment tabs underneath the rubber piece (which aligns with
 the circuit-board).

 As wad writes, peeling back the rubber membrane is probably not advisable.
 I don't think that I ever really needed to go that far, though.  You don't
 need to peel back the rubber membrane in order to align it properly when
 you reassemble the device after a disassembly.  But as wad indicates, this
 problem is probably caused by another problem anyway, so disassembly may
 not do anything for you.

 I do believe, however, that in my particular case it may well have been
 the rubber being squeezed by the plastic encasing due to improper
 alignment that was causing the problem.

-- 
Ticket URL: <http://dev.laptop.org/ticket/5658#comment:59>
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