Originally Posted by steve614
How did you prepare the "known good drive"? Does it have the proper Tivo software on it? You can't just throw in a hard drive and expect it to work.
How is the Tivo hooked up to the TV? Maybe you should try using the composite SD output temporarily for testing purposes.
Also, you might try unplugging then reseating the cable connections to the motherboard to make sure the connections are solid.
The known good drive is pull from another working Premier unit.
I had checked all connections on the motherboard, replaced the power supply from other Premiere unit.
Will try composite connection to see if anything is being displayed.
Connected TiVo, they said it looks like failure of the box. They will exchange for $79 and lifetime will transfer over so looks like that may be best option.