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Windows 7: Problem tuning in a particular channel

30 Nov 2011   #1

Windows 7 Home Premium x64
Problem tuning in a particular channel


For the last few months I haven't been able to tune in one particular OTA station using Windows Media Center. I am, however, able to tune it in just fine using Aver MediaCenter (the freebee application that came with my tuner) on the same PC. It's a local CBS station, channel 7.1. A multitude of other digital over-the-air stations (ABC, NBC, Fox, PBS, etc) come in just fine in both Windows Media Center and Aver MediaCenter. It's just that CBS station that won't play back in Windows Media Center.

I'm using an AVerMedia H826 USB Hybrid ATSC/QAM tuner that's been working fantastically over the last few years. Using the latest driver, version for Windows 7 x64 (which is what I'm running).

Of note:
  • When I scan for new channels in Windows Media Center, it finds channel 7.1 just fine.
  • When I go into "Digital TV Antenna Signal Strength" in Windows Media Center, channel 7.1 gets a full 6 green bars of signal strength.
  • When I tune to the channel (either directly from the Guide, or by cycling to it using Channel +/-), a message comes up saying "Service is unavailable" "There is currently no TV signal detected for this channel. The channel may be temporarily off the air. Try again later."
  • Again, I'm able to tune in the station just fine in Aver MediaCenter.
  • I'm just tuning in over-the-air stations - no Cable TV or anything
  • It might be worth noting that this same station is also broadcast, at lower power, on Channel 6.1, which I am also not able to tune in (which in this case is not all that surprising as I only get 1 bar of signal strength in the (signal strength) test). I used to be able to tune in the CBS station on 6.1, but I'm *pretty* sure (but not certain) that I haven't been able to tune in 6.1 *or* 7.1 since 7.1 was launched.
Here's what I've tried so far in troubleshooting:
  • "Set up a new TV signal" in Windows Media Center; I 'start fresh' by typing in my zip code, it downloads stuff from Microsoft, it scans for analog and digital channels, it finds everything...and I can tune in everything *but* 7.1.
  • "Add a missing channel" in Windows Media Center. I add Channel 7-1, with a frequency of 7, it gets full strength on the signal test...but no picture. Just the same error message about no TV signal being detected.
  • I've uninstalled and reinstalled Windows Media Center (from Add/Remove Programs, Turn Windows features on or off).
I've scoured the Internet, and I can't seem to find any reference to anyone having this particular problem other than me. I'm not sure what to try next. Any thoughts? Why can't I tune in CBS?!

Many thanks,

My System SpecsSystem Spec
11 Dec 2011   #2

Windows 7
Same exact problem

I have searched the Net for hours without finding a solution that actually works. Your description of the problem is exactly the same as mine. I live in the Seattle area and after 2 years without a problem suddenly lost 7.1. I have two WMC systems, and my other system tunes 7.1 without any trouble. I even tried switching the antennas to see if there was something about those but to no avail. I've also tried doing all of the reset suggestions made where I delete the WMC database, reset services, etc. I sure hope someone has a solution. I really don't want to miss NFL football, college bowl games, etc. that come in on that channel.
My System SpecsSystem Spec
17 Dec 2011   #3

7 professional 64
workaround - hit record

I'm in Seattle as well and have been experiencing the same problem. I have found that if you push the record button the channel will start working. You don't actually have to record, hit record a couple times to turn the recording off and it will keep working. You have to do this every time you tune in 7.1. Shows scheduled to record seem to have no issues.
My System SpecsSystem Spec

18 Dec 2011   #4

windows 7 home 64-bit

installing a second tuner seems to have fixed that problem for me. seem like wmc will switch tuners till it gets a good picture.
My System SpecsSystem Spec
20 Jan 2012   #5
Kevin P

Win 7 64 bit

I'm a new WMC user, and have a newly purchased Happauge HVR-850 tuner. Having the exact same problem with 7.1 in Seattle. Does this affect scheduled recordings as well? Any other solutions found?

Thanks - Kevin
My System SpecsSystem Spec
05 Nov 2012   #6

Windows 7

Having the same EXACT problem with 8.1 (NBC) in North Carolina. Strong signal, works perfect if I record (per "sproudly" workaround above), but if not recording, it says no TV signal.

Issue occurs on all three of my computers, two laptops and a desktop.

Hard to believe that nobody has figured out a fix yet :P
My System SpecsSystem Spec
06 Nov 2012   #7

Windows 7

Figured it out.

So for me, the "real" channel for 8.1 is 35 (go to and search your reception by address). For whatever reason, WMC will sometimes try to pull 8.1 in from two sources: 8.1 and 35.1. The key is to disable the 8.1 sources.

All you have to do is tune to the channel in question, go into the guide, right click on the channel, and select "edit channel". Next, click on "edit sources" and un-check the sources that are not the "real" channel. In my case, channel 8.1 should only be pulling from source 35.1, so I unchecked all of the 8.1 sources, and moved the 35.1 sources to the top. Save and Save... Go back... Flip to another channel, flip back... and poof... works!

Still can't believe no one posted the solution on here until now :P Hope this helps a few people.
My System SpecsSystem Spec
06 Nov 2012   #8

Windows 7 x64

Thanks, your solution worked.
My System SpecsSystem Spec
23 Nov 2012   #9


Just tried out the solution posted from tdew2 and it seems to be working. Looking up on the site, it showed that channel 7.1 should be channel 39. I noticed that for the properties in media center, it had both 39 and 26 listed. I removed 26, and put 39 at the top. I just tested it out by recording something on one station and then on 7.1 and it worked. So far so good.
My System SpecsSystem Spec
03 Mar 2013   #10

Windows 7 Pro x64 / Windows 7 Home Premium x32

Worked for me!
I had to disable the 'Real' channel though...
My System SpecsSystem Spec

 Problem tuning in a particular channel

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