[Trac #660] b1 laptop backlight malfunctioning

[Zarro Boogs per Child]

#660: b1 laptop backlight malfunctioning
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 Reporter:  ywwg      |       Owner:  mfoster  
     Type:  defect    |      Status:  new      
 Priority:  normal    |   Milestone:  Untriaged
Component:  hardware  |    Keywords:           
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 There are two problems with the backlight on my laptop.  The first is that
 it makes a noise when it is on.  It always made a very quiet high-pitched
 squeal (maybe 10-15Khz?), but now it's gotten worse.  It is very
 irritating and makes it so I literally can't stand to have the backlight
 on.  It sounds like a flashbulb charging up, too, because the pitched
 rises over time.  Also, the brighter the backlight is, the higher and
 louder the sound is.  At lower brightnesses, there is also a lower pitched
 sound too (under 1KHz I think).

 Also, the backlight no longer illuminates the screen completely or evenly.
 I'll attach a picture to demonstrate.

 This is a sudden problem.  I haven't used the laptop since christmas so
 it's just been sitting around (busy at work, sorry!).  I turned it on to
 upgrade to 212/b16 today, and the backlight was like this.  To be
 specific, the problem was present during bootup of 193/a62, and continues
 now that I've upgraded to 212/b16.

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Ticket URL: <http://dev.laptop.org/ticket/660>
One Laptop Per Child <http://laptop.org/>