I plugged the amp back up and found where the noise was coming from. It appears that part of the problem is in the Power Supply board. I turned on the amplifier and switched it back off then listened for the sound and sparks. I found it coming from PM-800 The power supply board. At point B wire from j1 ( plate current meter) And R3 Grid current Shunt Resistor. I have a video of what I found. Just wondering what caused the damage? And what might need to be done in order for me to try and repair the amp? I really appreciate all your help.