BU2508DX and BU4508DX are very similar. Be sure it has the DX ending. The power and current ratings are the same, about the only diference is the Tf rating, the 2508 is a little slower. John. John Mielke Main TV 636 Main St Longmont, Co 80501 303 776 6955 303 776 0792 fax www.longmontmaintv.com maintv2004@xxxxxxxxxxx ----- Original Message ----- From: "Shaun" <satguy@xxxxxxxxxxxxx> To: "tech" <techassist@xxxxxxxxxxxxx> Sent: Saturday, November 12, 2005 12:06 PM Subject: [TechAssist] Philips 27PT543S37A Chassis L01.1U AC-7638 > This set has horz output shorted 7640 (BU4508DX) is there a cross for this > transistor? Is there a common reason this output shorted on these set? > Thanks > > Shaun > > Advanced Electronics > 224 West Riverview Ave. > Fort Morgan, CO 80701 > > -------------------------------------------------------------------------- --- > 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/ > ----------------------------------------------------------------------------- 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/