I have a the wireless Gyration mouse and keyboard. I love them, they work great… or at least used to. I started having trouble with connect between the keyboard, mouse and the reciever. I tried re-syncing them, but I couldn’t get it to work at all.
I called tech support, they walked me through resetting the keyboard and mouse…. didn’t. I was barely still under warranty but, I didn’t have the original receipt so I was out of luck. As a last ditch effort I took apart the reciever. Inside were a few adjustable potimeters. There were two tall silver things and a red micro potimeter. I tried giving the red one a quarter turn and that seemed to fix things.
The moral of the story is, try taking things apart before you give up and throw them away…
UPDATE: Now I have solved the problem. The tall silver things are actually tunable receivers… I think. Anyhow here is how to adjust your reciever and re-tune it. So first take it apart. Point the LEDs on top and have the cable coming out the back. The silver thing towards the left tunes the first device you try to tune. The right silver thing tune the second thing you try to tune.
1) Put the reciever into Learn mode.
2) Hit teach on the keyboard.
3) Adjust the Left silver thing until you can train the keyboard.
4) Once you can train the keyboard, hit the Learn button and exit the mode.
5) Now enter the training mode again, this time train the mouse first.
6) Now you are working on training the second device.
7) Adjust the right silver thing until you can train the Keyboard.
Once that works exit the training mode, close everything up and you are good to go!

Hey!
I have the same problem. I am trying what you did, but I cannot seem to get it right. Did it take long for you to find the correct position of the tuners?
Sincerely,
Jorge Sanchez
It took a lot of fiddling to get it right. The trick is lock in one reciever at a time and going slowly. Also make sure you are adjusting the correct tuner.