Okay... try theses codes...
523, 526, 548, 549, 553, 554, 555, 585, 597, 626, 636, 638, 643, 648, 652, 654, 655, 665, 688, 669, 670, 672, 673, 702, 718, 726
press and hold the tv button just as before, except now after the buttons all light up, enter theses codes one at a time and press...