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I have an IBM Thinkpad A20m series. My screen is very dim, I can't make out anything. I'm having to plug in a monitor to see what's going on. Was working fine then BAM the screen went dim. I have tried the Fn key trying to brighten the screen but nothing happens. What could it be?

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The back light is not on. This could be either the backlight itself or the inverter that powers it.

Posted on Sep 29, 2009

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The fluorescent bulb that lights the screen from the back has failed. It may be the inverter circuit.
You can open the laptop keyboard bezel and try to re-seat the screen cable.
If that doesn't work, and you are brave, then whack the screen (seriously) gently and it may start working.
Fixing it may be a bit costly...

Posted on Sep 29, 2009

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Hello sandee232,

The following key combinations can be used for screen brightness:
•Fn + PgUp Turn the ThinkLight on or off.
•Fn + Home The LCD becomes brighter.
•Fn + End The LCD becomes less bright.

The screen brightness information can be located inthe IBM ThinkPad A21m User guide:
http://safemanuals.com/314159.php?k=c7c8bab9c3a5ec3c048ad8dc9eb006be&ID=321133&q=IBM%20THINKPAD%20A21M

If this solution is helpful please click a thumbs-up rating below.

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To turn on the wireless on IBM Think Pad 2628 A20m you can try the below options

IBM
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The cheapest and easiest solution for you is to simply replace the LCD screen (replacing the inverter or the tube are actually a bit cheaper, but not quite as easy to do - most computer repair centers will try to talk you into a new screen anyway). This is actually very simple for either you or someone you know who is an avid "do-it-yourselfer". IBM makes ity very easy. You will find easy, detailed instructions in the ThinkPad 600/600E (2645) Hardware Maintenance Manual, IBM S10L-9619-03 June 1999 available for FREE downloading in .pdf format on IBMs website. Follow this link to some really sweet deals on LCD screens for your 600e on eBay for under $35.00. http://shop.ebay.com/items/?_nkw=ibm+thinkpad+600e+lcd+screen&_sacat=0&_trksid=p3286.m270.l1313&_sop=12&_dmpt=Vintage_Electronics_R2&_odkw=IBM+tube&_osacat=0

Remember you can always connect an external monitor to your ThinkPad until your new screen arrives if you have one. The manual should also give you instructions to change out the tube if you wish to save a few more bucks and try that route. Hope this will FIX-YA! Please leave your feedback and let me know!

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