Hi there. The picture keeps disappearing on our newly purchased smart baby monitor. The sound seems fine still but the picture disappears after about a minute, only returning (again for about a minute) when you press the On button. It’s like it’s going into a power save mode or something which is absolutely infuriating as it’s the one device you don’t want that to happen on. The device has charged whilst off for 12 hours plus overnight. Please help! All the best, Alex