It may be the broadcast format in your region. Is one device PAL and the other NTSC? The difference with 50Hz vs. 60Hz would be the difference between the signal being supported or not, and this would likely be the cause.
Hi, I recently bought Samsung HT-C5500 from UK into India. Now when I connect to my TV (Sony KLV-32W400A), it comes up message 'unsupported signal. Check your device output' and nothing shows on the TV. The audio is perfectly fine. So, I am not sure what is the issue here. Please help. Thanks.