After storing my MW2200 for several months, I just turned it on for a job. All membrane buttons/switches (Process, Job, Store, and probably L/R arrows) are not working at all. There is no "feel" of any clicking, either, but then again I don't remember there ever being a tactile feedback. Working is the amp dial, the gas button, display, and both buttons on the torch. Showing is my last job, which was A/C Tig. I need to get into Tig DC, and pulse welding if possible but I can't even get off the AC setting. I am quite mechanically and electrically inclined, so not afraid to dig into things. I hope some one out there can offer suggestions as to how I can maybe clean the contacts, to get this thing working. I am located on the island of Mindoro in the Philippines, so as you can imagine there are no local stores to buy anything! Naturally this would happen when I just got a new job to do after all this Covid stuff. I look forward to any and all suggestions and help. Many thanks in advance. BobF