Ampeg B4R~~~Needs help!

[bassman57]

Can someone help me find a bench schematic for my B4R? I used it at an event in October, brought it home. When I went to pwr it up, it won't turn on. Switch metered good, etc. Scratching head! Any help is greatly appreciated. Thanks. The serial # is : AUSDL20036

[puggylikesbass]

Any luck with your head?? Mine's doing the same thing...