Recently I was able to revive my old childhood Tamagotchi (the 2004 connection v4 release). However, one day when I went to look at it the screen was just blank? I've tried cleaning the contacts and bending battery contacts and the screen does work for a while... the screen with the egg does come on, but after a while seconds it will fade to two black lines before finally going blank. The Tamagotchi does occasionally make a high-pitched whining or buzzing noise that only goes away when the battery is removed. Has anyone had this problem and successfully fixed it? I'm worried it's a wire issue but idk where to start 
