http://forum.lowyat.net/ Tue, 13 Oct 2026 21:20:18 +0800 FeedCreator 1.7.2 http://forum.lowyat.net/topic/367547 Does anyone out there who is facing the same issue with Compaq Presario V3040TU when running on battery power? The unit produces a hissing or buzzing noise when running on battery power. It only disappears when it is on main power. <br /><br />The noise appears in the front left of the keyboard even though it is very soft and can be annoying when it is in a quiet room. <br /><br />Here is how you can check it out yourself.<br /><br />- Find a quiet room. <br />- Put the notebook on battery power ONLY (switch off main power).<br />- Run for about 5 minutes when the notebook is slightly warm.<br />- Move your ear to the left of the notebook (near the network port).<br />- You should be able to pick up the noise.<br /><br />My notebook is just less than 2.5 months old.<br /><br />I would appreciate if someone could advise a solution for this issue. <br /><br />HP website has a similar problem but it is only for the B series that has to do with the display controller. <br /><br />Another similar issue has to do with Start -&gt; Control Panel -&gt; Power Options adjustment, but does not work when applied.<br /><br />Thanks Folks. dstteoh Technical Support Wed, 15 Nov 2006 08:29:02 +0800 http://forum.lowyat.net/topic/367078 Does anyone out there who is facing the same issue with Compaq Presario V3040TU when running on battery power? The unit produces a hissing or buzzing noise when running on battery power. It only disappears when it is on main power. <br /><br />The noise appears in the front left of the keyboard even though it is very soft and can be annoying when it is in a quiet room. <br /><br />Here is how you can check it out yourself.<br /><br />- Find a quiet room. <br />- Put the notebook on battery power ONLY (switch off main power).<br />- Run for about 5 minutes when the notebook is slightly warm.<br />- Move your ear to the left of the notebook (near the network port).<br />- You should be able to pick up the noise.<br /><br />My notebook is just less than 2.5 months old.<br /><br />I would appreciate if someone could advise a solution for this issue. <br /><br />HP website has a similar problem but it is only for the B series that has to do with the display controller. <br /><br />Another similar issue has to do with Start -&gt; Control Panel -&gt; Power Options adjustment, but does not work when applied.<br /><br />Thanks Folks. dstteoh Mobile Computing Tue, 14 Nov 2006 08:52:53 +0800