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I’ve repaired many Harmony 880/890 remote controls; changing LED's, swapping out bad LCD screens, fixing stubborn buttons and broken USB ports. Along the way, I’ve seen many remotes that look like someone took an ice pick to them in an attempt to open them up! Several guides on the web suggest that you use a screwdriver. Don't do it! You will risk breaking the locking tabs that hold the clamshell halves of the remote together. To open your remote without damaging or marring the exterior, do the following:
- Remove the two screws - one in the battery compartment and one at the top of the remote. Use a small Phillips head screwdriver (some inexpensive jeweler’s screwdriver kits have the size you need).
- Now, put the screwdriver away! Instead of using a screwdriver, use your thumbnail (this is really the best, unless you have a thin, rigid piece of plastic - A hard guitar pick works well ), force your nail between the two halves of the clamshell casing near the bottom of the remote on the left or right side. Once you get your nail (or plastic) into the remote, angle it down at about 45 degrees and simply slide your hand up one side. This will pop all the locking tabs very nicely without marring the surface of the remote. Then do the same on the other side.
- That's it! Now, you can continue your exploration of the inside of the remote. I mean, you did open it for a reason, right? Remember though, before you begin working on components that are susceptible to static electricity, it's a good idea to discharge any that you may be carrying around. The easiest way is to simply touch the metal part of a grounded appliance or device and don't work in an area where there are thick rugs or low humidity (if you are getting and giving shocks to your loved ones, choose another day).