remember that screws might be hidden under stickers. if there are no screws and you are sure of this then perhaps the back panel snaps on.
with that said, i would hope you are experienced in electronics repair and have documentation on the model. if not then you are likely to do more harm then good.
Good day to you, yes I think you may be right that the back panel is snaps on but I' am afraid that I may break the frame panel forcing it to popup with something like flat screw driver. There is no visual gaps around the panels to start with.