COMMON+PROBLEMS

=** Call tech support they will walk you though. 800-362-4308 ** = = = =**LEGO Mindstorms NXT Display Repair ** =
 * @http://www.youtube.com/watch?v=eCZNc7tPop0&feature=youtube_gdata_player **


 * Problems you may encounter and how to deal with them. **


 * Please make sure you are using V.1.1. There are many glitches in the 1.0 software that will cause unnecessary problems. **


 * Please make sure that if you are using v1.1 you have upgraded the firmware on your brick to 1.05 **


 * Do not upgrade your firmware to 1.05 if you are still using 1.0 software. **


 * Problem: My program will not download. **


 * Possible Solutions **
 * 1. **** First make sure you follow the suggestions on the possible errors list that pops up when a program does not successfully download. **


 * 2. **** Is the USB recognized by the computer? Look at the top left of your NXT screen. Does it say “USB” or do you see what looks like a wrench? If you see a wrench then your USB is not working. Try to unplug your USB into another port on your computer and see if that does not fix your connection. If it does not then try the USB on another computer with another robot. If it still does not work. Call customer service and ask about getting a replacement cable (If you are still under the 1yr warranty) If you are not under warranty then go to your local office supply store and look for one that costs around 10.00. Targus makes one. **


 * My Robot is not doing what I told it to do. **


 * 1. **** Check your program. Write in sentences what you want your robot to do in detail. Go to your program and write what your program is saying in detail and compare the two. Look for discrepancies. **


 * 2. **** If you have done this and you think that there really is something wrong. Download the program into a different robot and see if it behaves the same way. **


 * a. **** If you get the same behavior. The problem is in the program and you need to really take a close look at it. **
 * b. **** If the new robot performs the task of the program as it should then we know that there is some kind of glitch in your robot and you should reload the firmware. **


 * My Robot will not turn on. **
 * 1. **** Check to make sure the battery is charged. Allow it to charge for 10 to 20 minutes and try to turn it on again. When the battery is low you will get a “low battery” message on the screen. If you continue to run the robot until the battery is totally drained then it will take a few minutes of charging to get it so that it will start when you press the orange button. **
 * 2. **** Try the battery in another robot. If the battery works fine in another robot then you know it is not the battery. **
 * 3. **** Put 6 double AA’s in the brick. If it does turn on then you know it is not the brick. **
 * 4. **** If you know the battery is charged and works, and you know the brick works because it does with 6AA’s then the problem is that the battery is not making contact with the metal springs inside the casing. Be sure that the prongs that are supposed to make contact with the rechargeable battery are not pressed down into the casing. This has been a very common problem. There is a small metal hole where the battery must touch the springs. If the springs are pressed down or pulled up they will not make proper contact and the robot will not turn on. **