Problem was blue crystal Y4301. Thanks to Phil Bader. Paul Paul <dntwntv@xxxxxxxxxxxxx> wrote: There is a small board behind the dual focus,screen, control block and just above the HOT on this set. There is a transformer (T1) on this board. My schematic does not have this board on it. What is its function? After the set is on a while, it starts tearing at the top and then pulls in on the side and finally shuts down. I have used a couple of cans of coolant trying to find what is overheating. This little transformer is the only thing that seems to be getting hot,and responds, somewhat to coolant. Paul Paul ,B Central TV&Video Grover Beach Ca. ----------------------------------------------------------------------------- Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/ Paul ,B Central TV&Video Grover Beach Ca. ----------------------------------------------------------------------------- Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/