Thank you for the quick response. The TV models are listed as below:
Panasonic Viera TH50pv60e
I’m not entirely sure how to put the TVs to cable mode. ( When I turn them on TV mode instead of DVD or Laptop, there is nothing but snow. Yet the manus of TV seems to recognize the cable channels- they have the chanel names listed when I go to menu but only snow shows)
Finally, the TVs are connected to a divergent plug of three ends, one end is plugged into the socket on the TV whole and the other two are each plugged to one of the TVs with cable. (To check if it is the divergent plug malfunctioning, I have unplugged it from the socket and plugged each TV direclty onto the socket to check. Same thing happens, only snow.- therefore I have rulled out the problem with divergent plug but the signals coming from socket simply may not be there)
I look forward to hearing back from you.