Yamaha DTXpress/DTXplorer/DTXtreme

I have one of the first DTXpress sets to be made, and I still had not seen the low battery indicator. But being the worry-wart that I am, I went ahead and changed it BEFORE� seeing any warnings about it.� I actually did a "hot-switch" of the battery and replaced it with a new one, and didn't lose any of my user defined kits. I have a feeling if you swapped batteries and NOT had the unit powered up, you would lose what you had saved.� It's a pretty easy swap, and from the voltage levels that seemed to be present inside the unit when powered up, it seems to be a safe thing to do. You have to take off the top cover ( 2 screws on each side, and one in the back) and slide the cover off. The battery is located on the main board at the bottom of the unit, but you have to take out the 4 screws that hold a half size board to be able to access the battery.� You have to unplug all the cables since they plug into connectors on that half size board, and you can't move the board out of the way w/o unplugging the cables.� Once you can see the battery, I took a screwdriver that had a magnet on it, and placed it on the battery itself, then used a small screwdriver to release the battery from the snap-in holder that it's in. Then I just snapped the new one in and off it went.

If anybody needs the part number for the battery, I can look that up tonight and post it. Good idea to have the battery in advance so you don't have to take the thing apart twice, unless you want to leave it open and run to the store.� It's a button type battery, available from Radio Shack� The one in there is a Japanese battery, but easily cross-referenced to a R. Shack part.� I think it was only 3 bucks or so... pretty cheap insurance to not lose what you've worked so hard to save.

Hope the info helps!