HP 48G/GX darkened screen

[mfleming]

If you can see a faint outline of characters and icons when you turn it on, then the problem likely lies with the reflective backing behind the LCD glass, otherwise it's the LCD itself. Either way, you'll need to open the case and repair or replace the display. Replacement is the best option, though a recent member might be giving repair a try. The HP39G is a good candidate for replacement donor since it has a better contrast screen.

Have a look in the Articles forum and follow the link to the old article collection mentioned at the top to find several descriptions of the process. The process is a bit tough so you might want to practice on a dead 48 first. Alternatively there is someone in the US who will do the repair for you and you can find him on eBay, or scroll back a year or two through the Classified listings to find a post by him making the offer. The postage might be discouraging though!

When opening the case the "Charles Atlas" way, you need to watch out that you don't bend the keyboard plate as it will leave some of the lower keys feeling a bit mushy afterwards.

Read through and decide if you want to fix it yourself,
~Mark