Some damage caused by someone attempting a repair.My question ; in the photo does the gold dots connect to the layer underneath ,itmakes sense that is does connect otherwise what is the point of the track.The component were torn off with some track and gold dot attached ,the second photo is the dot and piece of track.Can someone explain about the function of the small round gold dots ,are they interconnections between layers?Are they soldered or deposited?Thanks

 

Don’t see how it can connect to an inner layer without a hole. It might just be a test point.

Bob

 

Looks like a test point. These are pads, typically only on the surface of the board, but certainly not always, that are contacted with a probe during automated testing. Judging from the fact that there is no hole underneath it, this one is only on the board surface. There is probably no reason to worry about it unless the board is going to be tested automatically again.

 

So in this case would all the dots be for bed of nails testing? It is a robotic camera board.The torn component is top right corner? thanks.