Just moved into a ~20 year old house with AT&T Fiber internet. Fiber enters the home in the living room and I’m seeking a solution to get wired internet into an office on the other side of the house.

The house is not wired for ethernet, but is wired for coax which is not in use. I purchased a 2 piece MoCA kit in an attempt to use the coax lines to run internet into the office.

There are 7 coax jacks inside the house and 7 coax cables coming out of a hole on the outside of the house, and none are labeled. To identify them, one by one I connected a MoCA adapter to a jack inside the house and then went outside and tried the other MoCA adapter on every cable until the light indicated a connection.

Only 2 of the coax jacks inside linked up with a cable outside. The other 5 showed no signal after trying every possible combination. The only conclusion I can come to is that 5 of the lines are damaged. Worth noting that the cables on the outside of the house have been exposed to the elements in a tropical climate for who knows how long.

Is there anything I could try to get those 5 lines working or are they toast?