I bought my first Belkin Thunderbolt Express Dock from Amazon about two or three weeks ago. I was having Mini DisplayPort passthrough issues when connecting to my HDTV. The TV will cut to black for a few seconds then resume displaying what ever I have up for about 7-10 seconds then it'll cut to black again. Occasionally, I get about a half second of video static right before it cuts to black. I have perfect, undisrupted connection when I plug directly into my MacBook. I also stole my mom's monitor, switched the passthrough to my VGA adapter and plugged in. Her monitor works perfect with or without passing through the dock. I called Belkin Customer Support for the first one, and they said it should be replaced but it'd have to be done through Amazon so they left me with a case ID incase Amazon asked for one. Amazon took it back and sent a brand new one without hesitation. Despite all the effort to get a functioning product in my hands, I still encounter the display passthrough issues. Should I try another replacement or should I return the dock and consider other docks?