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I'm using a Cox Mini Box for my TVs, and I got a small 32" Samsung TV (Model UN325500AFXZA) a coouple of months back for my desk to be a desktop TV/2nd monitor when needed. The problem I'm having is that every time I turn the TV on, it causes the mini box to completely reset, it does nothing for about a minute, and then the light powers down and it goes through a complete reset (Cox screen with the dashes at the bottom, LED turns red after the reset until it fully reboots), and only then will function properly. I've tried switching out the mini box with a different one from another TV, and have the same result, and the original mini box is fine on the other TV. Was hoping to get some idea as how to fix this.
Try turning off HDMI-CEC or Anynet on the TV.
Settings > System > Expert Settings > Anynet+ (HDMI-CEC), and then select Off.
Didn't work, Mini box still completely restarts when turning TV off and back on again.
Where does your Mini Box get its electrical power...an outlet on the wall or a switched outlet on your TV?
Check under "Labs" under settings on the mini box for HDMI-CEC settings there.
Also, to check it's a HDMI issue of some type, unplug the HDMI from the back of the box when you turn off the TV and see if the box still power cycles. If it does, it isn't related to HDMI-CEC. If it does, it most likely is related. If all else fails. I hear people have good luck with these adapters, that strip the HDMI-CEC signal all together.