No backlight, no indicator lights

T60/T61 series specific matters only
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tmacie
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Joined: Tue Nov 14, 2006 2:53 pm
Location: Putney VT USA

No backlight, no indicator lights

#1 Post by tmacie » Tue Nov 14, 2006 3:56 pm

Hi,
I have a T60 here that had a cracked screen, I replaced the screen but after I did so there was no back light. There are also no indicator lights. I replaced the FL inverter. No back light, no indicators (the indicators are on the fl inverter). Now, the ribbon cable for the screen supplies the screen, the fl inverter, and blue tooth. Ive looked at the cable and that looks ok. there is no spillage on the system board. Since I get data signal to the screen, I'm thinking the cable is ok. I've also tried a new FL inverter. Does anyone have any ideas?



Thanks,
Travis

smugiri
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#2 Post by smugiri » Tue Nov 14, 2006 4:49 pm

Replacement screen is bad?
Steve

tmacie
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#3 Post by tmacie » Wed Nov 15, 2006 8:37 am

I was thinking that, but I don't believe that would affect the indicator lights that are on the FL inverter.

Travis

hwangong
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Location: Raleigh, NC

Re: No backlight, no indicator lights

#4 Post by hwangong » Sun Jul 25, 2010 11:04 pm

Hi,

I have the exact same problem you have.
I changed the screen, no backlight and indicator lights except wireless internet light.

Although, when I connect the inverter in a half way from the left, screen works.
But then, if I close the lid and open it again, screen doesn't come back.

Put my old screen back in, same symptoms.
Tried new inverter, no luck.
Tried new video cable, no luck either.

Did you find out the solution yet?

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Re: No backlight, no indicator lights

#5 Post by RealBlackStuff » Mon Jul 26, 2010 5:57 am

Was your replacement screen a properly IBM/Lenovo P/N or FRU marked item, or just one of the so-called "compatible" screens?
If the latter, then there's probably no EDID chip on it, so it won't work!
See this post: http://forum.thinkpads.com/viewtopic.php?f=29&t=88972
Lovely day for a Guinness! (The Real Black Stuff)

Check out The Boardroom for Parts, Mods and Other Services.

hwangong
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Re: No backlight, no indicator lights

#6 Post by hwangong » Wed Jul 13, 2011 10:40 pm

But the thing is, I get the same symptoms even if I put the old stock screen back in. So I dont think its a problem of the lcd screen.

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