Did you try the steps provided in your original post from earlier today
If you go to Settings > General > External Device Manager Anynet+ (HDMI-CEC) and turn Anynet+ "off". This will stop the television from powering on your blu-ray player. The Anynet+ feature is what's causing the device to power on. I personally leave it off because I like turning on my devices when I'm ready to use it.
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