Amp-hours +2 display blank

This weekend after changing out my house and starter batteries on my boat the Amp-hour+2 display went blank and is no longer showing either voltage or amps. The display is totally blank as though it's not getting any power.

Wondering if you have a user manual for this meter including typical wiring diagrams or if you have any suggestions on how to go about trouble shooting the meter/display

It's a Amp-Hours+2 unit and has two switches. One to switch between volts and amps and the second switch to switch between battery bank 1 or 2.

Thanks for any assistance you can offer. I can send pictures of the meter if that helps.

Sincerely
Pat Smith
Patricksmithpmp@yahoo.com
908-566-7988

patricksmithpmp      05:56 - 31 Jul 2022