When the word PROTECT appears on this display, this means the unit has detected a critical fault which could potentially cause harm to your stereo system.
The most common cause is a short circuit somewhere - something even as simple as loose speaker wiring could cause a short, triggering the Protect message.
You will need to determine if there is a possible short somewhere, so I recommend you start by firstly turning power OFF, disconnecting all speaker wires, then turn unit back ON.
Operate the stereo (without speakers) and turn volume up:
- If Protect message appears when turning volume up, then stereo unit itself has an internal fault
- If no Protect message appears, then suspect the speakers may be causing the issue.
- Reduce volume and turn unit OFF
Re-connect speakers (ensure the connections are secure), turn unit ON:
- If turning volume up triggers the Protect message again, there is an issue with the speakers or connections
Hope this helps.....