[mythtv-users] HD-3000 recording corruption

[Craig Partin]

On 4/4/06, Steven Adeff <adeffs.mythtv at gmail.com> wrote:
> On 4/4/06, Steven Ihde <steve at x2.hamachi.us> wrote:
> > On Thursday 30 March 2006 14:21, Steven Ihde wrote:
> > > On Thursday 30 March 2006 14:11, Patrick Ouellette wrote:
> > > > Sounds like interference getting into the HD-3000 from the video card.
> > > > Try moving them farther apart, electrically shielding the card(s), and
> > > > make sure if you have a jumper cable between the sound card and the
> > > > HD-3000 that it is either removed or has RFI protection (a couple of
> > > > turns through a torroidal core at each end).
> > >
> > > I suspected RFI too.  I moved the cards as far away as possible.  There's
> > > no audio jumper, and I even tried unplugging the monitor cable.  I also
> > > removed the cable splitter in case it was poorly shielded.  Nothing seemed
> > > to help.
> > >
> > > I suspect a noisy video card more than an overly sensitive HD-3000, since
> > > swapping out the nVidia for the Radeon made the problem disappear
> > > completely (though it causes other problems as noted in my previous mail).
> > > Maybe I'll try an nVidia card from a different manufacturer (this one was
> > > 3D Fuzion I think).
> >
> > In case anyone's curious... I tried using aluminum foil as an RFI shield and
> > didn't get anywhere.  It made no perceptible difference.
> >
> > But, I traded the 3D Fuzion 6200-based card for a PNY 5500-based card, and the
> > problem went away completely.  I'm now able to watch standard-def,
> > unencrypted digital cable channels with mplayer without any trouble.  (My
> > system is too underpowered for HD as I previously mentioned.)  Next step, get
> > Myth to recognize the channels.
> >
> > Thanks,
> >
> > Steve
>
> better card for Myth anyway =D less power consumption too iirc.
>
> --
> Steve
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A small update for the archive.  I moved halfway across the country to
a completely different cable system and house and have the exact same
symptoms.  I can make beautiful QAM recordings as  long as no one is
watching anything at the time.  I think I can safely rule out any
signal problems and blame the hardware now.  I've been wanting a
dedicated backend anyway.