http://forum.lowyat.net/ Wed, 24 Jun 2026 22:57:57 +0800 FeedCreator 1.7.2 http://forum.lowyat.net/topic/984641 I&#39;ve recently came across this problem when connecting a Sony notebook to a 22&quot; LCD monitor, in Battery Mode, everything is calm and steady, but as soon as I plug in the AC adapter, there are horizontal scan line (or hum bars or ripples) on the LCD screen. I&#39;ve tried the following:<br /><br />- Change to different wall-socket, in different location, different building<br />- Change LCD monitor (Samsung, Asus, LG)<br />- Change refresh rate<br />- Use surge protector<br />- Use stabilizer<br />- Use different UPS (PK, APC)<br />- Use a combination of Surge protector, Stabilizer, UPS<br /><br />Non of the above solve the problem, and the following are further findings:<br />- Toshiba notebook also have the problem but not as visible and serious as Sony&#39;s<br />- Fujitsu notebook do not seems to have the problem<br />- Using different wall-socket (different power line) seems to help, but it only reduce the ripples, does not get rid of it.<br /><br />Finally, tried the following:<br />- Use a 2-prong (2-pin) power cable (those Euro-type) on the LCD monitor, it WORKS&#33;<br /><br />But I&#39;m still a little concerns as what effect will this non-grounded power cable (no ground pin) will have... anyone has any idea or alternative solutions? Appreciate feedback. <!--emo&:respect:--><img src='http://static.lowyat.net/style_emoticons/default/notworthy.gif' border='0' style='vertical-align:middle' alt='notworthy.gif' /><!--endemo--> <br /><br /> RookieDaddy Hardware Thu, 02 Apr 2009 10:07:02 +0800 http://forum.lowyat.net/topic/982270 I went shopping for new Sony lappy lately, I&#39;m puzzle by Sony&#39;s 3 months warranty for Power Adapter and the battery. Visited 3 different Sony Style outlet and 2 Best Denki retail, seems the same story. Only the main notebook unit got 1 year, while they consider Power Adapter and Battery as &quot;consumables&quot;. I failed to understand how the policy came about and the logic behind... They claim this is the &quot;standard practice...&quot;???? <!--emo&:stars:--><img src='http://static.lowyat.net/style_emoticons/default/rclxub.gif' border='0' style='vertical-align:middle' alt='rclxub.gif' /><!--endemo--> <br /><br />Went research on Asus, Dell, Toshiba, all giving 1 year warranty including Power Adapter and Battery. <br /><br />Can anyone shed a light on this?<br /><br /> RookieDaddy Hardware Tue, 31 Mar 2009 10:09:22 +0800