WHen I replace the batteries, all I get is a solid black screen.

Have you tried adjusting the contrast using second and the up and down arrows?

I found the solution on mathforum.com as well. What worked for me was doing a memory dump. Following are the instructions that I found: On 2006012917:15:08, silverHalo wrote: > > >One solution is doing a Memory Dump. These are the instructions for >reseting the memory if you can't see the screen. Turn calculator on. >Press the "2nd" (yellow button) and "+" (MEM) function (this takes us >to the "Memory" screen. Then press the down arrow key 4 times (which >is the #5 choice - Reset), then press "enter" (this selects the - >Reset function). Then press "enter" again (this selects the - "All >Memory" funtion). Then the down arrow key once, then "enter"( this >selects the #2 choice - Reset). IF you did it right then you should >see the normal screen again with the word "Memory cleared" or >something like that. If you hold your screen at an angle in a good >light source (sunlight) you can still see what you are doing on the >screen, as it is not totally black. Hope this helps!!

Hey, I had the same problem just now and found the solution on a math forum, the link is below. You probably already tried to adjust the contrast by holding down [2nd] and holding down [v] (=down arrow key). Instead try the following: Hold down [2nd] Hold down [v] Release [2nd] but not [v] and it will take the contrast back down to zero. What a relief, right? http://mathforum.org/t2t/discuss/message.taco?thread=1651&n=24