Is it the backlight or inverter?

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r2d2
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Is it the backlight or inverter?

#1 Post by r2d2 » Thu Feb 14, 2008 11:34 pm

I notice my screen is a little bit darker now than before. It is not totally dim or has any pink hue. Sometimes when powering up it flickers a bit although it has been like that for some time now.

It is not all blacked out that one could hardly see the icons. However it is a little dark like how you see the screen while wearing sunglasses.

Is this an inverter or a backlight issue? How will I know which, are there any tests to check which one is failing?

Thank you.
Best Regards,
Rosh

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phool@round
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#2 Post by phool@round » Tue Feb 19, 2008 12:57 am

I hate to see a question asked with no replies......

As far as I've read in this forum and what someone witty recently said, it's the chicken or the egg question.....

If I where you I'd replace the inverter and then you'll have a good idea which is at fault. There isn't a test that I've run across that tests the inverter or bulb through software. Nor do I know what the output of the inverter should be nor would I suggest someone attempt checking it without knowing how dangerous that is.

If it where mine I'd replace both the bulb and inverter because I can and because I've not seen a better answer yet.....lol.
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jamiphar
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Re: Is it the backlight or inverter?

#3 Post by jamiphar » Tue Feb 19, 2008 1:11 am

r2d2 wrote:I notice my screen is a little bit darker now than before. It is not totally dim or has any pink hue. Sometimes when powering up it flickers a bit although it has been like that for some time now.

It is not all blacked out that one could hardly see the icons. However it is a little dark like how you see the screen while wearing sunglasses.

Is this an inverter or a backlight issue? How will I know which, are there any tests to check which one is failing?

Thank you.
It sounds like the backlight's starting to go. If you leave the laptop on for a while, does the screen get a bit brighter?

:EDIT:

I forgot to mention it, but have you checked your brightness setting?
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r2d2
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#4 Post by r2d2 » Tue Feb 19, 2008 2:22 am

Thanks for the replies...

James... yes I checked brightness and also have tried leaving it ON for an hour or so but no improvement... still that slightly dim screen.

phool@round... thanks for the replies. Receiving no replies (at first) gave me the impression that no one in the forum knows if there is such a test or not. And it is quite normal in any forum. Having thought about it, why go through all the trouble in pinning down what caused it - I would replace the whole thing instead (LCD plus inverter). :D
Best Regards,
Rosh

X21- 384MB, 20GB, XP Pro
X20- 320MB, 15GB, PCLinuxOS
R31- 1GB, 120GB, XP Pro, wifi
Linux registration #463247

phool@round
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#5 Post by phool@round » Tue Feb 19, 2008 2:40 am

Is this on the X20 or X21, I forgot...... I do have an X21 up for sale in the Marketplace...... with a very bright screen....LOL.

Sell that piece of work.....!
R50/52, X20/21/23/24, T23/42/43, 240X, 570, 570E, 770X, 4 760's. + MAC's & SUN's

r2d2
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#6 Post by r2d2 » Tue Feb 19, 2008 8:35 am

This is the 'other' X21 :) and not the one on my sig. This is actually my mom's and I believe I have a another post on this where the problem is the lcd showing some works of art. Anyhow I do not think I still could sell this for any good amount because unlike the one you are selling in the Marketplace which is a real babe, this one is just totally the opposite.

I think I will just have to find an lcd replacement in eBay.. and since this is just an SVGA screen, I could probably get one for cheap. There's a lot of Thinkpad SVGA LCDs for sale in eBay but none is for an X21 or X20. I am just not too sure if the ones from an A2x or older Thinkpads would be compatible.
Best Regards,
Rosh

X21- 384MB, 20GB, XP Pro
X20- 320MB, 15GB, PCLinuxOS
R31- 1GB, 120GB, XP Pro, wifi
Linux registration #463247

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