Unfortunately, I don't have any specific way of diagnosing the television. I would recommend having it checked out by a service technician, and that can be done by calling the Samsung customer service center in your region.
So here is my problem:
My LE37B650 restarts by itself after 5 minutes, once a day (or after several hours off), and then no problems, it stays on. Just before restarting, the image scrambles for 3-4 seconds, the sound is OK.
I've done factory reset, firmware upgrading, but it goes on.
Does someone have an idea of what causing this ?
Oh, I almost forgot: I have only a PS3 & a DVD player plugged in, that's all, and I'm receiving via aerial antenna. No LAN or Internet connection to the TV.
Thanks in advance !