I have a Philips tv 32PF7421D/37 I bought used. I do not have a cable service subscription. I live in a condominium with built in twc cable wire in the apartment. A few months ago I attached the built in cable wire, I set the tv (scanned the channels) and got regular tv programs. A few weeks ago all the channels became not available.How can I get regular TV programs again(i.e., abs, cbn, fox, etc) without subscribing to cable service?