Heathkit EA-2 Vacuum Tube MONO Amplifier UNTESTED AS IS FOR PARTS/REPAIR.
After unit was plugged it, front light in panel doesn't light up.
After a short while the rectifying tube EZ81/6CA4 had sparks inside, was overheating together with the Electrolytic capacitor.
Removed the tube EZ81, no more heating in the capacitor, and all the other tubes have the filament lighted up.
Sold AS with NO RETURNS.