Hi everyone, Couple of weeks ago, I purchased gmc-500+ and configured to upload data as well. It was normally functioning and reading around 15-30 CPM normally. Yesterday it stopped to read any data and showing O CPM only. I have tried factory reset as well as removing the battery but nothing helped. Can anyone help me?
Hi skiredall, you can just compatible tubes as long as they can fit in the tube holder, you may need to solder/recalibrate if tubes are different. But you can just buy same M4011 tube to replace the old one.