Hi, bought an RCA 10 Viking Pro tablet recently. I like everything about it, I'm able to do all that I've tried---and want to do---and I'm enjoying it. I do have one question, though. I want to connect a mini-HDMI cable to a TV HDMI port. I'm thinking that perhaps I have a defective cable, and I'd appreciate comments about what I've done thus far. I purchased the cable new from Amazon (thus I can't just go locally and exchange the cable). The connections on both ends seem secure. I turned on HDMI in my tablet's settings, and I left the resolution setting at Auto (default). Plugged cable into HDMI port on (Vizio) TV, navigated to that port, screen shows black with "Resolution Not Supported." No settings to change resolution on TV (at least that I could find, including reading manual), so I stepped through all settings on tablet (1080, 720, 480, etc.) and no difference. Tried all three ports on TV, Roku box works fine in any of them. Moved to my wife's (LG) TV, unplugged her Amazon Firestick, and plugged in the RCA tablet. Now, screen shows black with "No Signal" message. Lastly, went to an older (Vizio) TV, unplugged Roku Stick, plugged in tablet, and this time no message, just a black screen. I'm thinking that this cable is bad, and the varying results in each TV just have to do with the TV. Bottom line---none of the TVs can see a valid signal, and because other devices work in the HDMI ports, they've been eliminated as a problem. My wife looked around other websites and found some people saying that it made a difference about which device was powered up first (TV or tablet), but I've tried various combinations and no change. Can anyone think of something that I may have overlooked? I've been over and over what I've done, and I don't see anything that I've done wrong. I'm ready to send the cable back for a replacement, but just wanted to see what comments I may receive. Thanks!