RCA TV model F35670, CTC187. Came in with open fuse, and U4101 Reg IC shorted. Replaced After replacement U4101 runs hot and fails after 1-2 hours. Have replaced in an attempt to fix: Bridge diodes, main filter C4007, T4101, CR4106. No unusual symptoms on screen, HOT runs cool. Reg B+ ok. Greg Mitchell Mitchell TV 408 S. 11th Street Niles, MI 49120 269-683-0868 269-683-1501 fax 70650.1534@xxxxxxxxxxxxxx ***************************************************************************** The Tech Address Book: http://www.tech-assist.org/secure/tip/contact.html Add a Repair Tip Here, or Change/Remove your Email Address: http://www.tech-assist.org/secure/tip/main.html Lost Password: http://www.tech-assist.org and select "Lost your Login Info?". Email Archives: //www.freelists.org/archives/techassist/