sparks1: is there any way to adjust volume for just hd channels,and how do i find out sw info.buy the way it 32"bv7
Sadly, no. HD channels are simply quieter than the others. It's always been like that, in the same way the adverts are two or three levels louder.
You need to go in to the service menu to find this info. You might be better off just asking your dealer. I'm sure yours will be revision 3 though as my old BV7-32 was at r3 when I had it HD upgraded, a year ago.