@skymunky57
Despite how it was delivered, I would heed the advice of some you see here.
On something like this, where the final product isn't going to be worth all that much anyway, you can really get in over your head quite quickly due to its complexity!
If the power rectifier was damaged, the repair might be fairly simple- just replace the rectifier. If the output section was damaged because one rail was shorted by the backwards capacitor, then at that point you have to consider whether the unit is worth repair! That is because its very likely both channels are damaged, and output transistors and their driver transistors that actually work (and aren't counterfeit, which is very common these days) can be rare and expensive since they are likely long out of production.
You will want to have identified all the damaged semiconductors before ordering any of them. In addition, a helpful tool is something called a variac, which allows you to start the AC power from zero volts and slowly raise it until you get to full 117V. Such a unit should have an ammeter, so you can see that you are drawing too much current before something is damaged.
I would at the very least wait until your brother is about.
Despite how it was delivered, I would heed the advice of some you see here.
On something like this, where the final product isn't going to be worth all that much anyway, you can really get in over your head quite quickly due to its complexity!
If the power rectifier was damaged, the repair might be fairly simple- just replace the rectifier. If the output section was damaged because one rail was shorted by the backwards capacitor, then at that point you have to consider whether the unit is worth repair! That is because its very likely both channels are damaged, and output transistors and their driver transistors that actually work (and aren't counterfeit, which is very common these days) can be rare and expensive since they are likely long out of production.
You will want to have identified all the damaged semiconductors before ordering any of them. In addition, a helpful tool is something called a variac, which allows you to start the AC power from zero volts and slowly raise it until you get to full 117V. Such a unit should have an ammeter, so you can see that you are drawing too much current before something is damaged.
I would at the very least wait until your brother is about.