Re: Laptop always dim at turn on
- From: no@xxxxxxxxxxxx (Davy)
- Date: Wed, 26 Apr 2006 09:31:26 GMT
Hi jprice & welcome to HTFC
Well, sounds to me like the back lamps, they'er a wee bit like the ol'
flourescent tubes but they don't have no heater at the ends...they'er
called CCFL Cold Cathode Flouresecne Lamp, they'er about the
diameter of a knitting needle.
The voltage inverter is usually a modual, yes they do go sometimes,
unless you've got SMD soldering equipment the only thing you can do
is to replace it, they churn out about 2,000V or 2KV for short at
start-up.
The ones I've seen normally starts to lose the pure white emision, so
on white displays you start to get a pinkish tinge, then they start
the ol' flickering syndrome.... having said that bet I'll come across
a tube that does some other trick..!
The whole tube itself just slides out after disconnected it's wire
ended leads, there's usually one at the top and one at the bottom,
unless you are getting the exact replacement you need to be very
careful of the length and more so the diameter.
So chances if it went all at once I would suspect the inverter rather
than the tubes, thus it may be beneficial to change them both to
save time.
To give you some idea have a peep here-:
http://www.fonerbooks.com/laptop_5.htm
Davy
.
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- From: jprice
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