I have Dish Network with the new dual room HD-DVR reciever. TV1 is currently working but TV2 just has snow on the screen. Have called the tech and run all their diagnostics (hard reset, etc, etc). It use to work in all rooms but now only TV1 is working. All the lights are light up. Currently, the modulator is set to TV1-Air Channel 62 TV2-Air Channel 60. They want to send a tech out for a ton of money. Could it be a bad splitter?