I decided to try to set up an old cheap remote on my new TV (don't ask). I didn't have a code so i went through the set up process but after apparent success (the TV turned off) when i tried to turn the TV on again it clicked and went dead. The standby light doesn't come on and neither the universal nor the standard remote has any effect. Unplugging makes no difference and the fuse isn't blown. Can anyone please tell me what might have happened and how to remedy?