ok i am ammending the description in my last post. the cable from the street ends in a small box on my house front wall. from this small box exits the potentially faulty black cable which goes across my front wall, thru the garage and up the back wall to the internal cable modem socket/white box.
i have just been outside tracing all this stuff like i should have earlier
i hope this makes more sense now
is this black cable still coax? only it seems very tough and "plastic" to be coax, i doesnt seem to want to bend easily.
Steve