Try just using a 3 prong -->2 prong adapter on the PC. This has worked for me twice.<br><br><div><span class="gmail_quote">On 7/5/06, <b class="gmail_sendername">Owen Mehegan</b> <<a href="mailto:owen@nerdnetworks.org">
owen@nerdnetworks.org</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div><div style="">I have a new Myth system that I've just built. I'm using an MSI PM8M-V motherboard, with its on-board audio (Via VT8233/A/8235/8237 AC97) for everything. The system is connected to a Sony 34" CRT TV using DVI/HDMI cable. Audio is routed as follows:
<div><br></div><div>cable box -> myth box -> tv -> Sony home theater receiver/speakers</div><div><br></div><div>All of that is done via basic RCA cables. My problem is that I have an intermittent 60hz hum in the audio. I hear it whether I'm watching TV or just in the Myth interface. Playing with various mixer volumes doesn't make it go away, in the sense that I can't null it out without having the whole system's volume down too low to hear anything. I have everything plugged into one power strip/wall outlet, and the outlet has three prongs; whether it's really properly grounded or not is anyone's guess. I tried unplugging various unrelated components (Xbox, cable box, cable modem/router) and got no change.
</div><div><br></div><div>So, any suggestions on what I should do to clean up this audio? Maybe buy a better sound card? (And use spdif out while I'm at it? My receiver can handle it, though it's a pain in the ass from a "management of the available inputs" perspective.) What if I bought a UPS and plugged everything into that? I've seen suggestions of "home theater" magical grounding thingys... if you think one of those would help, a link to a specific product would be sweet. Thanks!
</div><div><br><div> <p style="margin: 0px;"><font style="font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; font-size: 12px; line-height: normal; font-size-adjust: none; font-stretch: normal;" face="Helvetica" size="3">
--</font></p> <p style="margin: 0px;"><font style="font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; font-size: 12px; line-height: normal; font-size-adjust: none; font-stretch: normal;" face="Helvetica" size="3">
<a href="mailto:owen@nerdnetworks.org" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">owen@nerdnetworks.org</a> (Owen B. Mehegan)</font></p> <p style="margin: 0px;"><font style="font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; font-size: 12px; line-height: normal; font-size-adjust: none; font-stretch: normal;" face="Helvetica" size="3">
'Therefore, since brevity is the soul of wit,</font></p> <p style="margin: 0px;"><font style="font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; font-size: 12px; line-height: normal; font-size-adjust: none; font-stretch: normal;" face="Helvetica" size="3">
And tediousness the limbs and outward flourishes,</font></p> <p style="margin: 0px;"><font style="font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; font-size: 12px; line-height: normal; font-size-adjust: none; font-stretch: normal;" face="Helvetica" size="3">
I will be brief.'</font></p> <p style="margin: 0px;"><font style="font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; font-size: 12px; line-height: normal; font-size-adjust: none; font-stretch: normal;" face="Helvetica" size="3">
<span> </span>--William Shakespeare</font></p> </div><br></div></div>
</div><br>_______________________________________________<br>mythtv-users mailing list<br><a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:mythtv-users@mythtv.org">mythtv-users@mythtv.org</a><br><a onclick="return top.js.OpenExtLink(window,event,this)" href="http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users" target="_blank">
http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users</a><br><br><br></blockquote></div><br>