Set Top box , TV Tuner or Monitor Problem

[Kalpesh Kalekar]

I don't know where to post this anyway

I have a Gadmei tv tuner Connected to my Set Top box to a Acer Monitor
but when i connect the cable wire to the STB this happens
http://youtu.be/RUqN8DCI-Io

& When i move the wire a little this
http://youtu.be/tY0c5cctspk

My Cable
http://imgur.com/a/uhQB7

Update :
As suggested I Called my cable company they replaced the wire with new Connectro the cable guy said there is a problem with my monitor or the TV Tuner But my monitor works fine with PC & The TV Tuner works fine on my frinds connection

 

[americanaudiophile]

The F connector on that cable had not been applied correctly. Either re-terminate it or replace the cable.