Sharp LC-37D4U 1080i picture problem

The message got posted before I finished. Here's what I meant to say:

I have a Sharp LC-37D4U HD tv that is about a year old. We have been using the tv in conjunction with an hd dvr box from our local cable company (Brighthouse) with no problem.

We recently switched to Verizon FiOS service. We have a similar HD DVR box (from Motorola). We are experiencing a problem when switching from non-HD (480i) to HD (1080i) stations. When we move from one to the other, the HD picture gets shifted to the right, and the right third of the picture is blurry.

Here's the weird(er) part. If we cycle the tv to another input source (e.g., dvd) - even if that input source is not on - then cycle back to the HDMI input source, the 1080i signal clears up fine.

It is not a problem with the tuner box - Verizon tried three different ones. They also swapped our HDMI cable (and kindly gave us the extra).

There must be some problem with the TV trying to adjust to the 1080i signal from a 480 signal. I am hoping someone might know of some configuration setting that would help with this. The message got posted before I finished. Here's what I meant to say: I have a Sharp LC-37D4U HD tv that is about a year old. We have been using the tv in conjunction with an hd dvr box from our local cable company (Brighthouse) with no problem. We recently switched to Verizon FiOS service. We have a similar HD DVR box (from Motorola). We are experiencing a problem when switching from non-HD (480i) to HD (1080i) stations. When we move from one to the other, the HD picture gets shifted to the right, and the right third of the picture is blurry. Here's the weird(er) part. If we cycle the tv to another input source (e.g., dvd) - even if that input source is not on - then cycle back to the HDMI input source, the 1080i signal clears up fine. It is not a problem with the tuner box - Verizon tried three different ones. They also swapped our HDMI cable (and kindly gave us the extra). There must be some problem with the TV trying to adjust to the 1080i signal from a 480 signal. I am hoping someone might know of some configuration setting that would help with this.