I have the same issue on my Slingbox Pro HD. I have been using this for a while with no problems, but in the last week whenever I turn on the slingbox on my iMac, the TV image appears in a very small box in the upper left hand side of the screen. What has happened with Slingbox recently.
NOTHING changed on my end. I'm using the same computer, on the same network, with the same DVR. I have plenty of bandwith. I get the same small image whether I view the Slingbox on the web or in a pop-up window.
This also affects my iPad when I try to watch TV on that as well.
Hi mikel6920, I suggest you verify your cablebox, the Slingbox will broadcast everything that receives from the cablebox like any regular TV, you can check the cables and also reboot your cablebox to see if the issue continues.
Also you can connect the cables that you are using in the Slingbox to a TV to see if the TV gets the same issue.