Hi everyone I’m a newbie to this interesting forum and need help with my Sip Topmig 150 Turbo which I have had since 1992.The wire speed which is erratic when laying a bead of weld , I have already done the basic mods ie wire tensioner plate bolted to the top and curtain wire for the torch and new earth clamp. Now power supply mod which BillJ did with a 240VAC 24V switching psu with 2 relays was excellent but my Pcb which is MIG 02 IPF doesn’t have the CN5 would it be possible to do without the CN5, I hope someone can help me below are the 2 circuits diagrams from the user instructions many thanks.