My v6 box is no longer working. Cycles thru "No signal" Then "Welcome" showing amber light. Then "No signal" again, so I press On from the remote and it goes to "Starting up" and a white light. Then after a few minutes goes back to "Welcome" with amber light. Have tried rebooting by turning off at the box and unplugging for 20 minutes, then plugging in again and resetting the box by holding the power button and the "+" button. Still not working even after waiting several minutes.