My sympathies for you. These sort of problems are painfully frustrating. I had a period where MC TV wasn't working for me but I persevered and all's well now.
I've had, in the main, a pretty straight forward experience with my Tuner and MC. Here's the forum post on tuners:
http://yabb.jriver.com/interact/index.php?topic=33741.0Your tuner isn't listed but this info stands out to me as being relevant for you:
Digital TV tuners:
ATSC and DVB-T/T2/S/S2/C devices are supported. All devices that conform to Broadcast Driver Architecture (BDA) should work.
So this is your tuner and the manufacturer claims that it's good to go with Windows BDA.
http://www.tbsdtv.com/products/tbs6981-dvb-s2-dual-tuner-pcie-card.htmlFrom here:
http://www.tbsdtv.com/news/drivers-applications-update.html5th entry on 12 April 2013 the TBS6981 driver was upgraded to v2.0.1.6 - covering Windows 7.
However on the manufacturer's forum it's evident that the TBS6981 has had some compatibility issues:
http://www.tbsdtv.com/forum/viewtopic.php?f=86&t=8478&hilit=TBS+6981This post might also be relevant - dunno, not my thing:
http://www.tbsdtv.com/forum/viewtopic.php?f=21&t=8501&hilit=TBS+6981So, have you sent Yaobing a log file as requested?
Have you ruled out driver issues, either by making sure that you're up to date or rolling back to prior versions?
Have you reviewed your MoBo BIOS version currency as the tbsdtv forum post indicates that this is a relevant check point? From the relevant post, note the manufacturer's advice:
Before reporting any compatibility issue, it is very important to check if the BIOS of the motherboard you are using are up-to-date, since we have a bunch of cases where the problem was easily solved just by updating the BIOS.
All I know is that I use a tuner that's noted on the MC supported list and have had a pretty smooth ride all up and the TV function works fine for me. From experience with Yaobing, if you give him the technical data that he asks for and you follow his lead, you stand a good chance of sorting the problem out.
You may have had one-on-one correspondence outside the forum but from what I see here, you've got a few stones to turn over before you pronounce last rites on MC's TV capability for your system. So, I urge you to do everything you can to help yourself. I'm confident that it will pay dividends if you do.
Hope you get it sorted soon. All the best..