need a schematic and/or manual for Simpson 460 series 2

[gadget73]

As the title says, I need a manual or schematic for a Simpson 460 series 2 digital voltmeter.  This one has some problems that I can't chase down without the map.  I found one for a later 460 series, but its a very different meter.

Failing that, does anyone know how close a Simpson 360 portable digital is to the 460 bench meter? 

Yes I know its an old piece of junk.  Its just a rainy day sort of project.  Either it needs to work, or it needs to go away.  Figure I'll give it a go first, otherwise its a project box for something.

[trog1058]

http://simpson260.com/downloads/downloads-2.htm


hope this helps