You can go here to see a demonstration of how DLP works, http://www.dlphttp://www.dlp.com/?DCMP=TIHomeTracking&HQS=Other+OT+home_p_dlp.com/?DCMP=TIHomeTracking&HQS=Other+OT+home_p_dlp. Noisey color wheels are common on Samsung sets. Replacements cost around $125. Some are very easy to replace, some are a little harder. They usually take about 1 hour to change. Once you have the light engine out, there are just 2 or 3 screws holding the wheel. If it is bad, you will still have a good picture. John. John Mielke Main TV 636 Main St Longmont, Co 80501 303 776 6955 303 776 0792 fax www.longmontmaintv.com maintv2004@xxxxxxxxxxx ----------------------------------------------------------------------------- This Email List is accessible to the general public through search engines. Remove: http://www.tech-assist.org/remove.htm Set Vacation mailto:ecartis@xxxxxxxxxxxxx?subject=set%20techassist%20vacation Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/