hi, i have rgb strips on my room, they are on my wall and they have 3m sticky tape on the back but 1 problem they dont stick how can i fix this?
The backing on those strips isn't very good. Just use some better double sided tape. I used 3M 4010 on the strip in my case but you'll probably want something thinner for on the wall.
Sometimes these LED strips get warm...not hot, but warm enough so the glue on the tapes comes off. Either use better tape, or mount them on an aluminum strip, or for better looks, an aluminum U-shape.