I am working on a Samsung PTV Model# HCM4216W with a P55A chassis. I found the CRT circuit board for the Blue tube has a hole almost burned through it. Then I found that the clear plastic cover for the expansion diaphragm for theblue tube was full of coolant fluid which is what leaked onto the crt board anad caused the damage. I downloaded the service manual from the Tech-Assist web site. I found the part number for the CRT Circuit board in the parts list. I am having trouble finding the part number for the expansiondiaphragm if it is even available seperatly. There is no exploded view of the CRT assemblies in thsi manual. I was wondering if any one is an Samsung ASC or familiar with this problem and could help me out with a part number for the rubber expansion diaphragm or if there is a service bulletin about thsi problem? TIA, Dale Dale A. Lubow Harris TV &Appliance 335 Lincoln Way Ames, IA 50010 515-232-1109 Fax 515-232-3356 E-mail HarrisTV50010@xxxxxxx ----------------------------------------------------------------------------- This Email List is Public. Remove: http://www.tech-assist.org/remove.htm Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/