Pioneer Vsx-921 shutting down with overheat

D410

Would it be wise to pull the outputs until I can figure out where and what is still gone??

I learned that you can put a dummy load from the base to the emitters of the output transistors and check for sane voltages at all legs where they transistors sat while working on it
to save the outputs from going. I use a 470 ohm 1/2 watt resistor , all legs must be lifted of the outputs .

Here is an example of a vintage Yamaha A-3 



Nashou