With all due respect, since you seem to be somewhat lacking in knowledge on what a power output transistor looks like, then your chances of identifying the problem are pretty low. Without a circuit dagram, someone who really knows what they are looking for will have to dig deep into their knowledge of circuitry to identify where the faults lie. As previously stated, your best bet is to simply replace the damaged capacitors, switch ON and if it works, all well and good. If it doesn't work, and you really want to keep it, then pass it onto a colleague who has the skills to trouble shoot. Otherwise you could well be throwing good money after bad, with little chance of success.