I bought a Miller syncrowave 300 For doing aluminum repair on boats etc. I picked it up in Dallas Texas prob. 3 years ago.Came with tig cooler and foot control .I hooked it up maybe a year ago and since i had never tig welded before I tryed some stick welding with it . It humble me fairly quick . It seemed to strike a arc fine some times then the next time it would spit sputter like low power. When I finally had a chance to hook it up I had a friend help me . He has done a lot of tig welding through the years .WE could't Seem to get hyfreq to work or establish a arc. After many countless hours on computer searching forums I am still trying to figure it out . I need a little direction on where to start and finish trouble shooting.Would like to find copy of repair manual that would walk me through trouble shooting the problem.