Hitachi 42PD9700 contrast problem

Vinny74

Novice Member
When trying to setup my Hitachi 429700 with the DVE disk in both my Oppo971 and my XBox 360 I've noticed a problem with the contrast.

If I raise the contrast to it's maximum level (+31) and then reduce it, there is no noticable difference until I reach a level of -7.

Is this a characteristic of this TV, or do I have a problem?
 
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