Carver TFM-35X No Sound

I have a TFM-35X just stop producing sound on me and need help please. I had this for over 10yrs now. The problem is when I power it up it doesn’t produce sound and it just sit there “clicking” every 5-10 second continuously. Is there an easy fix for his? Please help me out if any one know the symptom.

Thanks in advance,
I have one of those and dont know the answer but if nobody chimes in try as there is alot of focus on older gear there.