Besides the fact consideration of why the contacts of the card are that dirty.  A short exposure of rubbing alcohol will be okay.  Dust the card off with compressed air or something similar.  then use the cotton swab soaked with a little bit of the alchohol on the contacts in question
<br><br><div><span class="gmail_quote">On 9/12/07, <b class="gmail_sendername">Albert Hopkins</b> &lt;<a href="mailto:marduk@letterboxes.org">marduk@letterboxes.org</a>&gt; wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
On Wed, 2007-09-12 at 21:21 -0300, Jorge Peixoto de Morais Neto wrote:<br>&gt; Hi. I have instability in my PC and I highly suspect it is caused by<br>&gt; hardware problems in my TV card. I would like to clean its contacts
<br>&gt; and see if it, by a miracle, solves the problem. But I don&#39;t want to<br>&gt; make it worse. So: is it safe to clean the contacts of a PCI card with<br>&gt; isopropyl alcohol and a cotton swab?<br><br>Use a pencil eraser instead.
<br><br>--<br>Albert W. Hopkins<br><br>--<br><a href="mailto:gentoo-user@gentoo.org">gentoo-user@gentoo.org</a> mailing list<br><br></blockquote></div><br>