I realize this is over a year old, but for anyone else’s future reference you can find replacement boards on ebay. There is even a seller with brand new 700’s serial number boards (AKA the last batches available after the bootloop recalls). I think the name is “gsmplaza” IIRC; they’re based in Israel and are the only sellers selling BRAND NEW boards, not refurbished or used, so it shouldn’t be hard to find.
Is the Qualcomm WCD9330 where the DAC resides?
By dislodged, do you mean that the cable slipped out of the connector— or that the cable broke? If it came out of the connector you will need some angled tweezers to flip the connector tab up and then slide the cable back under it, then snap the connector closed over it. If the cable broke, then you will need to get a replacement (I got mine on ebay).
This ipod with the plastic face is a Lot easier to open than the Classics which all but require deforming the metal to open it. The tabs on this are plastic, so just think of needing to just slightly push those tabs inward while pushing that side of the case slightly outward by rocking/ twisting the opening tool back and forth in the seam. Another trick is getting the tool in and slowly sliding it along the edges to start working it loose all the way around (or at least 3/4 of the way around). Then if needed, use a 2nd tool (or a guitar pick, credit card, small putty knife, icing spatula, etc) to prop open the gap while you pry/ twist with the tool one side at a time. Good luck!