Czarivey as usual giving bad advice including insurance fraud.
Two most likely culprits are caps and resistors. If it is a cap, it may just be leaking fluid onto a normally hot component.
A quick inspection by you (if you know how to open it up) or a tech should identify the hot component. If not, then power it up with the top off and a thermal camera will identify the hot component immediately. Should not be expensive fix.
and if you can afford this amp, you don't need to commit insurance fraud.
Jerry