The CEC will repeated execution of power may turn on the devices   
There are many different names for CEC, such as BRAVIA Link, BRAVIA Sync, HMDI Control, SimpLink, CE-Link, Regza Link, EasyLink, Fun-Link, HDMI-CEC. 
For Philips TV, the CEC calls  easy link. Generally, you need to enter the TV settings. , find options like CEC, pls see the reference video about how to turn off the cec