The sync on This set will not lock for about three to five minutes when first turned on then it locks but still may loose sync on a weak signal. Problem is same using external A/V input so it's not a tuner problem. I have replaced the rain forest IC, no help, also since everything I checked pointed to the CS00641A module I sent it to PTS for repair but still have the same problem. Any and all suggestions will be welcome. Thanks, PS, Yes, I tried circuit cooler, no help. ******************************** Since 1972 * Jim Myers * Telrad Electronics * Fort Wayne Indiana * ******************************** ----------------------------------------------------------------------------- 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/