Hey, sorry for the slow replies!
Look for similar ones from Sharp on panelook.com
that use the same pinout on their datasheet. Most starting with "LQ133T1JW" ought to be interchangeable, but check the datasheet just to be sure. If your current panel only has a backlight issue, you should be able to swap out the LED strip with a new one. There's plenty of LQ133T1JW02's on eBay, seems like the main difference is that they're thicker and taller than the W17's by just half a millimeter.
Thank you so much for the link- do you know if I would be able to exchange the screen with any of those other ones and still keep the digitizer and drawing capabilities intact? I use this for all of my art so I really need to keep its drawing ability, and I'm not sure if the digitizer is a separate piece or somehow bound to the screen itself. Also, would I need any kind of specific LED strip to just replace that, or could I find that more easily? I'm sorry if these are obvious questions or anything, I don't know much about screens. I've figured that it is probably a light problem because I have a vertical band on the screen with color distortion and flickering and heat at the bottom, but every computer specialist I've been to has been unwilling to help or open the screen to check this. I was wondering if I could simply replace the LED strip which would be obviously ideal.
Hey, no need to be sorry, and welcome to the forums!
I found it on a local auction site, but I can't see it available anymore. Depending on your location, you might want to set up alerts for these parts on ebay or other services, via rss or otherwise. You'll hit your part within 2-3 months usually, unless it's really rare. You can also try AliExpress, it should be available there either new or refurbished.
Thank you! I've been periodically checking ebay but I think I'll set up alerts for it, thank you for the suggestion. I checked out AliExpress and can't seem to find it in stock there, but I have found it on Alibaba for what I'm assuming was only wholesale, so I wasn't sure if I would be able to buy only one piece. The T904 and its parts seem to get more scarce over time so I hope I can find it somewhere.