weird backlight issue with a t40

T4x series specific matters only
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cg3332
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weird backlight issue with a t40

#1 Post by cg3332 » Sat Apr 21, 2012 7:19 pm

Hello all,

backlight of my t40 stopped working. if i use a pocket light i can still see the thinkpad logo at boot etc.
however when i install the display on a t42 it works perfectly without the backlight issue. then i tried an r50 display and its the same story, working with the t42, backlight issue with the t40

could this be some kind of flexing on the t40 mobo ?

rkawakami
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Re: weird backlight issue with a t40

#2 Post by rkawakami » Sat Apr 21, 2012 7:28 pm

Welcome to thinkpads.com!

Sounds like a fuse on the motherboard has blown. Here's a thread that talks about the T4x fuses:

http://forum.thinkpads.com/viewtopic.php?f=2&t=72861
Ray Kawakami
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