Kenwood problem

First time post.

I was given a car cassette receiver (Kenwood KRC-980) after my cd receiver was stolen from my car. After installing it I found it failed to power up. I tested the current at the radios plug and it was definiately getting power. I opened up the faceplate after a copper contact fell into the faceplate and found what I think is the problem. Below this copper contact pad is two pairs of solder points that appear to have remnants of glue that I think might have had another metal piece to make contact with the above mentioned copper pad. It is hard to describe so I have a picture of the area described.

Any help would be greatly appreciated.