DANA 5800 Digital Multimeter/Ratiometer seeking info/ Repair Thread

[valley001]

Hello all,

Edit:  Ill also use this as a trouble shooting thread. 

I am seeking any additional information on this model.  I do have a copy of the manual but is not comprehensive, it does not contain the usual troubleshooting information that DANA seems to have provided in their manuals.  It does at least contain schematics.  There is practically nothing out there on the web on this unit, I have hope that someone with boxes upon boxes of test equipment manuals may have some additional information on it, like a separate service/repair manual.   

My example has issues with the digitizing/logic sections, I think.