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Philips 32PHH4509/88 TV not respond certain remote function

Good day folks.
Got this Philips 32PHH4509/88 piece of junk TV that has a strange issue: it doesn't respond to certain buttons on the remote control and as such, it can't be switched off...yes, you heard me: OFF. When you plug it in, it turns on by itself, displays the picture just fine, but you can't change the source, switch it off or access some of the menus - highlighting these menus works, but pressing enter or OK does nothing. The IR sensor however does register the keys on the remote transmitter being pressed, because the LED at the front flashes, but the TV doesn't actually respond. Even if I let the no signal countdown timer run down, it just stays there displaying "powering off in 0 seconds" but never actually does so. There's only one power button on the side of the TV and it doesn't do anything either. I tried downloading the firmware for it and placing it on a flash drive, but it did absolutely nothing. Either the firmware I tried is the same as the one currently installed and it won't accept it, or the mainboard's bricked...either way, is there anything else I should be trying ?
Someone else faced this issue before ?  It's truly strange