1. Run hardware diagnostic test
Enable Hardware Diagnostic Test in Tools > Settings > General > Common
Start the test under Tools > Hardware Diagnostic Test
Select the device (Measurement or Hearing Instrument), all needed parameters, and press Start test
If the test result is OK, you see the status Passed. If the test fails, you see the status Please check
2. Do hardware reset
Disconnect all transducers, accessories and cables from the Instrument
Find a small hole on the backside (for Primus/Unity) or frontside (Measure) of the board.
Insert a paperclip into the hole and wait until it clicks lightly.
Hold the clip for two seconds and then connect the USB cable without removing the pin
Wait until the Instrument blinks a few times.
Remove the clip and restart the software.
3. Send log files to Support
If none of the solutions works, locate the Primus log files under C:\ProgramData\Real Ear\Primus:
Hardware: HWCommands.log
Software: log-file.xml
Send the files to the Primus support team for further troubleshooting.