Posts: 673
Threads: 20
Joined: Oct 2008
There are two ways to get at your screen. I read up on memory upgrades and took a plain old 48G to 128K and found a couple of ways to dissassmble. I drilled out the heat stakes from the back battery compartment and removed my IR lense and cut posts (You have a different IR lens). Then I pried apart. Once apart you will see small twist knobs (I did not go further as I only needed to pull 32K chip and solder a larger 128K chip (a whole other story). These little twist knobs allow you to pull off the main guts and get to the front. You LCD will then be an alignment issue to place back on. Also you will need to be sure your compression pad on the LCD is good as that is a major failure that affects keyboard operation. The great thing about this approach is that IT LOOKS CLEAN WHEN YOU ARE DONE. The downside is my case is not as solid as it used to be (creaks like an old TI). I have other calculators and do not use this one much so I cannot say whether it would hold up to day to day use (seemed okay when I put it away).
Another more direct way is to peel up the front of the calculator to get directly to the LCD. I believe this is also possible and would be much quicker. However, your faceplate will show this attack and look rather shabbly after this operation. Again, you will have alignment issues and lack of proper pressure on the LCD and keyboard traces could haunt you.
There are a few people here who have repaired broken LCD's but I suspect it can be a cumbersome trial and effort experience.