So I finally pulled out my Sansui 3000a with original packing box and some literature ! Unit is is very nice condition and I was pleased to see the service recall issue had been taken care of with factory issued mounts! Been listening to it's excellent tuner for a couple weeks but recently the unit shuts down and has the red protect light on.... Question, I haven't looked at the service manual yet, but I assume the issue is heat related as it plays normally for a period of time until the protect comes on? Thinking about pulling the outputs and reapplying some fresh thermal grease ? I will check the bias while it's open too. Anything else to check??