offered to replace the displays on nine popular notebook PC models after customers created a web site to complain about them.
Dellverticalline.com complained that the faulty LCD screens, which were shipped in 2005 developed a one pixel-wide vertical line across them.
The site complained that Dell treated those who complained about the fault "like dirt".
Dell initially offered to replace certain 17-inch displays on Inspiron 9200, Inspiron 9300 and XPS Gen 2 notebooks sold between November 2004 and October 2006.
Now Dell has expanded its replacement programme to include six more models, including the Inspiron 6000 and 8600, Latitude D800 and D810, and Precision Mobile Workstation M60 and M70 notebooks sold between December 2004 and December 2006.
Lionel Menchaca, Dell's digital media manager said it would appear that some of those models use a faulty component that can generate the line over time.