Hello fellow recording enthusiasts, While I have read through this forum many times, this is my first time as a registered user. I own an older Yamaha MR 1642 analog mixing console. I simply love the smooth sound of these old preamps this board has. The board has functioned as it should, without issues for the last 29 years, but recently it acquired a rather annoying symptom. All six of the VU meters simultaneously lost the ability to illuminate. This makes it very difficult for my eyes to see the meters. I have yet to open her up to investigate possible culprits. I was curios if anybody has had this happen on this mixer or any other older consoles. Do you think it is something as simple as a fuse, or something more serious? Any help would be greatly appreciated. Thanks all!