Fuse is good, pressure is good, consumables are new, continuity on torch safety pins, 2t or 4t, normal or tip saver pilot. Pressing the trigger briefly initiates air flow and post flow when released, no spark what so ever. No warning lights. If i hold the trigger down, there's no air or spark, soon as trigger is released the post flow starts. Any troubleshooting?? I've contacted tech but they've quit responding.