I am looking for a working Earthy Logic board from a Solartron 7071 or 7081. That's the PCB on the top deck left side. The Guildline 9578 is also a valid donor as they are just a rebadge. Can anyone help? I burnt more hours than I care to think of on this board and someone else had at it for 8 months on and off. We both failed to get it working. I know it is that board as the meter works if I install one from another meter Thank you David