dlbmmm,
It sounds like youre television is in shop mode. There is one of two ways to fix this so that your settings will stay.
1. Press the MENU button on the television (not the remote) for about 12 seconds. If the picture flashes or blinks, you will be back in "Dynamic" mode, and then switch it.
2. If that doesn't work, quickly push the volume button on the television up, let go and then repeat #1.
Keep me posted!
--HDTech
Set picture to Standard Mode but afer approx 30 minutes the set reverts back to dynamic mode.
I am obviously missing something in the setup, any assistance greatly appreciated
DLBmmm

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic