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My Samsung le37c550 or LE37C550J1W has picked up an unusual fault.
I have been using it for Chrome cast and Xbox One without fault until this week, as it not comes up with the error 'Mode not supported, change the resolution of your device'
This has never appeared before and I have tried 2 other HDMI devices that all say the same thing. THese devices all worked before on this TV and still work on another TV in the house.....