I had received the boards today.
I realize you were trying to learn, and i cannot knock on anyone for trying and learning. However constructive criticism says this:
Need to be a lot less sloppy with the soldering iron. You have done some extreme damage to the boards. Im sure i can fix it, but the thing that bothers me are the vias. its like you drilled out the vias? you cannot do this. ever.... you will break connections between layers of the PCB. and possibly short layer-to-layer. Trust me, i know....
These are 4 layer boards, and traces run from layer to layer. Each traces is connected between layers if routed between layers, through a Via. If the via is broken/drilled/etc you can damage the the inter-layer connection. Anyway, I have schematics so its not difficult for me to fix. I just have to hope layers arnt shorted, or i will have to cut traces, and route around it to clear the shorts.
Also on one board, I noticed you have a bare copper wire run from C8 all the way around to the bottom of the board. I am not going to explain the reasons why this is a bad idea
On the flip side though, it seems besides the ones with broken pads, you got the capacitors soldered in place perfectly fine. No problems there, good job
So... What I am going to do, is fix these boards, I will document everything that I do, on my youtube channel, etc... Therefore, I recommend you and everyone who has a modern computer, watch youtube, and use this as a learning experience in case the same thing happens to anyone else.
Stuff happens, no one can predict it. All we can do as human beings is learn from it. So we shall
I am heading up to parts express tomorrow because I have to restock on my caps so I can do the other 2 boards. I use radials. I dont use tantalum because I dont like the spontaneous shorting that could happen when they age. When tantalum caps get old, they start to become noisy when DC leakage starts to creep in. Then sometimes they will just short. Which in high current circuits result in a BANG.
P.S. I am sorry, I am trying to not be offensive to anyone. I am simply stating my findings, and mention ways to work around it and learn from it, as we have to fix this before I can begin further troubleshooting of which IC could have taken a hit.