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Hello there (again), i have a problem with Hauppauge Nexus, first of all i don't use the computer screen at all, I always use the Composite (RCA) output of the DVB card, but i've got a strange picture with Horizontial lines, i've got the video but with Horizontial Lines moving Up and Down. How can i Fix it? Does anyone else has this "Lines"?

PS
If i don't have any windows program Running or if there is no action at my "Desktop" Screen the Lines aren't so visible, but if i have windows open the Lines are so so terrable.

First of all, it's possible, your video cable has some shielding trouble. Audio cable is not good for this purpose, as it is not made to match 75 Ohms impedance condition. Impedance failure decreases shielding effect enormously.

Second chance, your computer case has general shielding issues, f.e. if ATX shielding plate removed, or mainboard ground not contacted properly by all the screws.

Then, most modern mainboards come with a BIOS option for RF noise energy dispersion (wobbling clocks a bit). Check both states, if available.

But it's also possible, your power supply or the mainboard itself or another card causes this. In such a case, try another PCI slot.

One more, this can as well be caused by the TV itself, if it's video input does not match the 75 Ohms impedance condition, by this getting overdriven a bit, causing clamping errors and black level shift depending on peak white signal components. If there's a switch on the TV input, to load 75 Ohms or use high impedance, switch on the load.

However, test with TV antenna and all other possible extra cables (on TV and PC) out, to avoid double grounding and alike, and test again.
Also disconnect audio from TV.

And try on other video inputs, on the same or another TV or any other device (like a VCR) and compare.

Last one, if available, try a ferrite around the video cable, on the TV end, like its often used on VGA or USB2 cables. In many cases, they can be detached and remounted carefully without damage.

Just a few hints and guesses from an experienced TV mechanic...

Thanks Juergen, i will give a trie. But the only problem that confued me is that with Hauppauge DVBs (not Nexus) the picture was perfect (at the same PCI socket, with the same RCA cable, all the same).
I will trie. Thank you and thanks for the help with Tuner.

First of all, it's possible, your video cable has some shielding trouble. Audio cable is not good for this purpose, as it is not made to match 75 Ohms impedance condition. Impedance failure decreases shielding effect enormously.

I've got the best cable in the market.

Second chance, your computer case has general shielding issues, f.e. if ATX shielding plate removed, or mainboard ground not contacted properly by all the screws.

Test it, and it was missing some contacts...fix it but still the same with Hauppauge nexus.

Then, most modern mainboards come with a BIOS option for RF noise energy dispersion (wobbling clocks a bit). Check both states, if available.

I don't have this on my computers.

But it's also possible, your power supply or the mainboard itself or another card causes this. In such a case, try another PCI slot.

Same think at all PCI slots. Power supply i've got alot i've got 1200w PSU.

One more, this can as well be caused by the TV itself, if it's video input does not match the 75 Ohms impedance condition, by this getting overdriven a bit, causing clamping errors and black level shift depending on peak white signal components. If there's a switch on the TV input, to load 75 Ohms or use high impedance, switch on the load.
However, test with TV antenna and all other possible extra cables (on TV and PC) out, to avoid double grounding and alike, and test again.
Also disconnect audio from TV.

And try on other video inputs, on the same or another TV or any other device (like a VCR) and compare.

No it isn't the TV, i've got 20 TVs and a video Maatrix and it is the same think at all.



Finaly i buy 3 new DVB cards from TechnoTrend and works Fine So the problem is with Hauppauge Nexus v2.3 .

How if you connect one of the TVs directly?

BTW, does this also happen with other DVB applications, like the original one from Technotrend / hauppauge?
If so, this is not related with ProgDVB, and you would be at the wrong place here.

However, on such a big video distribution systen, it's possible, you have some RF interference, intruding backwards over the long cables or even mains power line(s) and ground potential.

In the end, your pictures look like some interference irritates the synch and black level clamping stages of the monitor(s).
May even be caused by one of those, if it's PSU runs at a relatively low converter frequency (like or close to the line frequency 15625 Hz) and fails to synchronize the PSU with the line frequency.
Or some other technical equipment spreads noise through the power line(s).

How far away is the video splitter?
If more than two or three meters, try to put another video amplifier in betweeen for testing, like the AV path of some VHS or similar.
Also possible, the video splitter has some level calibration or 75 Ohms impedance matching trouble.

Also possible, your interference comes along the outer shield of a long cable. If so, attach some noise filter ferrites, close to the DVB-S RCA out, like used on premium VGA cables.

Anyway, we are getting far off topic here now.

Perhaps you need a really good TV mechanic.

You are right, i'm a little of topic sorry.
Thanks for your help.

BTW, does this also happen with other DVB applications, like the original one from Technotrend / hauppauge?
If so, this is not related with ProgDVB, and you would be at the wrong place here.

Now i check the original one from Technotrend and it is the same thing with the lines. (this only happent at Nexus, NOT with TechnoTrend S2300).
Any way..... Thanks Again.

So now we really know, it's not ProgDVB related.
Get a good technician.

The Nexus' TV out driver stage may be partly bad, by this needing some buffer added, or it takes up some weird interference, perhaps requiring some extra filtering. Does it have J2 available?
Just don't throw it away easily...