There were some firmware bugs so during the call they should check the firmware.
Also if you want you can extend the warranty and wait a month till you make a claim.
I have UN55HU8550 that is about a 18 months old. About a month ago the TV started turning off on its own after anywhere from a few minutes to about 20 minutes being on. Then it will turn itself back on after a few minutes. Sometimes the picture goes black but the volume stays on until it turns off and on again. Any Ideas what the problem is or how to fix it?