Windows 7 Media Center MCE Losing or Changing ClearQAM Channels After Channel Scanning or Internet TV Guide Update – How to Fix
After setting up Windows Media Center with my new Hauppauge 2250 Tv Tuner Card, I had all of my HD digital TV clearQAM channels piped in from Cox coax and it was wonderful.
However after the MCE tv guide updated on the internet, my channel listing dropped some good channels and changed the listing numbers. Here is how I fixed my MCE channels and stopped Media Center from changing the channels automatically (wrong) on me.
you have to scan for channels with the network disconnected.
This will pull a ‘real, full scan’
You will want to stop the scan once a few channels show up, but not let it complete. IE stop around %45 scan complete.
now go into the channel editor in MCE and write down which frequency/channel the station is actually using such as ‘86.1’ and the detected bitrate QAM64
now repeat re-scanning/overwriting channels until you get all the ones you want written down. see my list below as an example.
now, when you plug your network back in, the internet directory info will ‘correct’ a few stations, this is actually screwing them up and overwriting actual signals with what it thinks should be there from the info in the internet lookup.
since you have written down the actual frequecies for the stations prior, you can go into the ‘add missing channels’ setup and manually add the ‘overwritten channels’
THEN YOU HAVE TO DISABLE CHANNEL UPDATING IN THE REGISTRY:
here are my Cox Orange County, CA HD channels
internet guide channel# desc real chl/freq QAM bitrate
4.1 KNBCDT 23.45 64
4.2 KNBCDT2 23.315 64
5.1 KTLADT 86.2 64
5.3 KTLADT3 88.6809* 64
6.4/2.1 KCBSHD 2.1 40.3 256
7.1 KABCDT 31.1 256
7.2 KABCDT2 31.4 256
9.1 KCALDT 40.1 256
11.1 KTTVDT 31.3 256
12.1 KDOCHD 35.43284* 256
13.1 KCOPDT 80.19653* 64
13.3 KCOPDT3 6.7123* 64
*MCE windows 7 only allows up to 3 decimal places for manual channel entry. These channels had to be auto scanned by MCE for me to receive them. I was not able to manually add them due to the longer digits
more info here http://www.thegreenbutton.tv/forums/viewtopic.php?f=6&t=6069&p=73943#p73943