Programming doesn't change on it's own... EVER!


You have one of two things happening... maybe both:

1. The HDMI control is turned to ON in the TV/DVD or other peice of equipment.

2. (MOST LIKELY) The HDMI input command that you are using is acting as a toggle. I don't remember what models had this issue, but it was with either HDMI 1 or 2 that would act as a toggle.

BOTH of these issues could be combining to cause your problem.

Assuming you are using HDMI inputs: Take the same command and place it on the remote, in standalone, and fire it at the TV a couple times. I bet it goes between HDMI and tuner.