by tg100 » Sat Jan 21, 2012 8:34 pm
Hi,
I had exactly this problem. I sent one card back, but the second card did exactly the same. I would intermittently get "no signal" on one or other of the tuners, and programmes would often not record.
I was looking for an alternate card, but came across this post on another forum which has solved the issue.
The problem relates to Window 7, and I understand is a recognised fault. The operating system seemingly randomly tries to re-search for new services, but whilst doing so the tuner is deemed out of use, thus the "no tv signal". This has completely fixed my problem and both tuners function as they should now.
See below:
BlackGold has received a number of reports of occurrences of tuner loss in Windows Media Center 7. Microsoft (MS) recognised this as being a known issue within Media Center (MC).
This manifests itself by MC reporting that no tuners are available for a requested operation (i.e. loss of one or more tuners as far as Media Center is concerned). However, Windows Device Manager always reports the expected number of tuners and the tuners are available for use, but MC alone reports not available.
We were advised by MS to use a registry switch to turn off background scan, as a known background scan problem did manifest itself in several ways. Which included among other issues very high memory usage by ehrecvr and also tuner loss. Microsoft will hopefully address the issue in a later rollout.
Please can you follow the sequence below, to ensure backgroundscan disabling is correctly implemented.
1) Download and unzip the backgroundscan registry key: backgroundscan.reg
2) Uninstall the BlackGold drivers.
3) Delete the existing driver files... Delete all files beginning with 11317231* in C:\Windows\
4) Double click on and apply the registry switch backgroundscan.reg.
5) Power off restart the PC.
6) For BGT3620 & BGT3595 ensure that the latest drivers are loaded (version 8.1.0.0 at time of writing), or latest appropriate driver for other cards.
7) Ensure Media Center is restarted and that a new set-up and re-tune are completed.
Microsoft should still include a fix in a later release of Media Center.
Please note: Backgroundscan periodically scans frequencies to check for any channel alterations or new channels. Where the EPG is downloaded from the internet, such as the UK, this is not required, so no loss in functionality will be experienced by disabling backgroundscan.