If this keyboard can be open normally - you could fix it, but in this situation almost impossible. Maybe with hot air heating but it is a risk to damage it...
Thank you for watching :) Problem was keyboard not working :) I buy it as broken. I repaired few keyboards until now, just not recorded on video :) the video is just to inform people who try to open to not try to open :D If this world want to save some of future for our kids, everything must be repairable ;)