To get the channel and OK/Select to send signals to the TV, use the 973 Channel Lock command.  I have no idea why volume up button doesn't work--nearly all Philips TVs use the same signal for that

If there are other functions or equipment that you want to control, post the model numbers of the equipment.  There is no guarantee that we'll know the code for a specific model, but the odds are better than just saying, for example, "2006 Philip TV".