Use this link to examine an opened remote; https://electric.garden/samsung-a3l/smart-control-rmcspb1ep1. Examine and enlarge the images for clues for mounting hardware or lack of them. If mounting screws aren't visible, they may be hidden under labels. Use a small round object or fingernail and press on the label. Any depression may be where screws are and require peeling off the label. If screws aren't used, the case may snap together, requiring careful prying to find where the clamshell snaps together. If you are successful in disassembling the case halves, locate the batteries and either desolder them and/or attempt to power up the remote with AA cells temporarily wired in to see if the remote will operate. If the remote operates, you can search for replacement batteries. Good luck as it is a worthwhile project.