Possibly repairable. Got an after cleaning picture so we can see what you are working with now?

I will have them this evening. Apparently I left before the photos synced to Google Photos this morning, they're sitting on my old phone at home.

I've attempted to solder them down but the solder just isn't sticking to anything. I've cleaned with vinegar, later with ispropyl alcohol, and tried a little flux. Also tried lead-based and lead-free solder.

Be very careful, once they are corroded like that they tend to break off even more easily than usual.

One option: Use a fiber glass pen to brush off the corrosion. Brush along the pins, not across them. If the pads can't be recovered, you still can scratch off some of the green finishing and solder a small wire between the pin and the trace.

keenerb wrote:

I will have them this evening. Apparently I left before the photos synced to Google Photos this morning, they're sitting on my old phone at home.

I've attempted to solder them down but the solder just isn't sticking to anything. I've cleaned with vinegar, later with ispropyl alcohol, and tried a little flux. Also tried lead-based and lead-free solder.

Generous amount of flux and solder. Deoxit -> Dentatured alcohol -> baking soda. This is the order I typically go through for bad corrosion.

Looking at that picture though there is likely to be plenty of trace damage and broken/lifted pads.

The traces seem fine, I spent quite a while checking each of them. There are four fingers towards the middle of the chip that have lifted off their pads.

I used a fair amount of flux trying to resolder, but it just won't stick.

I have been looking for an excuse to pick up a hot-air pencil, I may use this as an excuse and try to lift the chip off the board and clean everything up nicely.

http://i.imgur.com/T3pzquS.jpg

I don't mean to sound discouraging, but that looks pretty grim to me.

Do you know if this is a multi-layer PCB? The vias indicate it could be, although they might also just be for connecting to the rear foil.

Notice all the blistering...that's caused by the caustic effect of the leaked electrolyte destroying the PCB like a cancer from the inside-out. Even if you are able to clean the board up and repair all the external connections, any inner copper layers would eventually fail if they haven't already.

Its also possible for corrosion that severe to burrow it's way along the legs into the chip itself, destroying it. I've repaired a number of Amiga motherboards with less visual damage than this where several ICs were killed by the corrosion.

Yep, I expect the motherboard is toast, but I'll give it a shot anyway...