I tried your solution last night and then rinsed out the water chamber this morning and turned the iron on to get steam. At first I didn't get any steam so I shook the base unit and finally the steam came pouring out without me even pressing the steam button. In fact there was no way for me to control the steam. Plenty of water was spitting out along with the steam.
I let the iron cool and again filled it up with vinegar and let it heat up. I shook the iron up. The vinegar steam start pouring out of the iron like it used to and the trigger started working again. I unplugged the iron and let it cool down. When I get home from work tonight I will drain the vinegar out of the iron and use water again. Thanks for your advice, your answer was right on and solved my problem.