OK I have no idea what I'm supposed to be doing, and the walkthroughs online don't give any explanation.

After I pull the piston, the TVs change, and when I try to add them back to the original tally, each box seems to increase the value by 1. What in the hell am I supposed to be doing here? Because when I try that it doesn't work. Please help!

Also, UDK doesn't seem to be able to do screenshots. I hit Print Screen, but I get a black box when I paste it into Paint. :\

I solved it! FINALLY!

Maybe you can post how exactly did you solve it to help the others. ;)

Before you pull the piston to start the puzzle, take note of how many lines (1-5) are on each TV (the full horizontal bar is 5), and place each block with that same number where it was. Don't be thrown off that it adds to each block, because it will come out correctly. I had

3 | 5 | 2 | 1 | 4, and placed each block where it belonged, like this

3 | 5 | 2 | 1 | 4
3 | 5 | 2 | 1 | 4 (remember the solid line across counts as 5)

Like M15... said, after you pull the piston just remember the order of the stripes and match it with the blocks. But be sure all four lower light bulbs are lit first.