[mythtv-users] M179 vs. PVR-250. was: ivtv firmware 2.02 or 1.9 ?

[James L. Paul]

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On Wednesday 24 March 2004 07:54, Chris Thompson wrote:
> Jarod C. Wilson (jcw at wilsonet.com) wrote:
> > No distinguishable difference between the two for me. I have a retail
> > rev2 PVR-250 and an M179 in the same box, no problem. For a secondary
> > card (or even a primary, if you have another remote control interface),
> > the M179 is a solid deal. Save the money.
>
> This does not seem to be a constant. I actually purchased two M179s to go
> in my master backend alongside my PVR250 based on your success. My results
> have not been as successful.
>
> My M179s, if fed by my RCA DirecTV boxes over SVideo, return a black and
> white (But very clear) image. I get color on composite in, but very
> scratchy sound on both. One of the two has very dirty video with vertical
> lines of static throughout.
>
> I've been posting to the ivtv list for help, and the consensus over there
> on the interference issue is that the M179 cards did not have as much
> attention paid to shielding, and that M179s should be wrapped in shielding
> somehow. One guy has his M179 in the very last slot and wrapped in
> shielding to good results.
>
> Another recommended that any IDE cables be kept well clear of M179 cards.

> Nobody has even sniffed at my black and white video problem as of yet.

Is it possible that the saturation is simply set too low somehow? Have you 
tried directly setting the saturation to max value and see if you see any 
difference? Otherwise perhaps you have an Svideo cable with a broken 
chrominance line, or your card is only getting luminance signal for some 
other reason.

> With considerable tweaking I got adequate video out of the one M179 over
> composite.
>
> It's possible that Jarod got a better card than mine, or perhaps that my
> Board and/or power supply are noisier. I'm not sure, but at this point, I'm
> regretting the purchase.
>
> _______________
> Chris Thompson
>
>
> !DSPAM:4061d853259675184467465!
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