![]() ![]() It's handy to know what parts go into something. The RCX is basically an LCD display, a microcontroller chip, a couple H-bridges, a speaker, an IR LED and receiver and some button and Lego wire connector contact. This is a good site that details the internals of the RCX brick. The safest way to do this is to remove all the screws and press the first and last battery contacts out of the battery compartment. To push the contacts out you have to press the little release clip on the contact that prevents it from slipping back through the hole in the plastic. Once that is released, you can gently pry and work the plastic shell apart. ![]() Work slowly because it can get bound up and you could easily crack or break something. There are a few tiny pieces that hold the PC board to the upper case that will break if you are not careful. ![]() My set didn't come with the original installation disk, but I wanted to try programming the RCX brick with the LEGO OEM software before branching out. ![]()
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