Eagle Depth Finder

Does anyone out there have, or know where I might obtain an electronic schematic for an Eagle Model Sixty Thirty flasher type depth finder. I know this is an old model, but it has had very little use and I'd hate to throw it away with out giving a shot at repairing it. Eagle says they no longer supply any support for this unit. If someone out there has a schematic, I would willingly pay any copying, postage costs.