Technical re:  High def. T.v.  System
	
	
		My cable company is in the process of upgrading their service.   For me, it just has caused many problems. 
1.  They changed a cable wire gone bad two weeks ago; gave me a new remote.
2.  They came a few days later as I was getting no signal.   For this, they changed the cable box.   Now I get NO SOUND ON THE PUBLIC EDUCATION STATION.   I get only background sounds of the scene, but no DIALOGUE, which is rather strange.
I called them again and they said there seems to be something wrong with the equipment.
So here we go again... 
Any suggestions ?
Thanks.