How Can I Fix my Bush TV Model IDLCD37TV07HD?

Bush TV Model IDLCD37TV07HD - 1. When trying to use digital viewing message says "Digital Receiver Starting Up" - The blue power light flashes,for about 5 mins, then screen lights up pink and frozen.\r\n2. When switching tv off, message says "please wait, shutting down". This lasts for about 10 mins then tv shuts off.