You can get a replacment solenoid at www.airsoldier.com
. Either of the following should work:
You can tell if you noid is dead or not by pushing the little red button on the noid when the marker is turned on and powerd up. If the noid does not click, then the noid is dead. If the noid clicks when you push the little red button on it with everything hooked up and the marker turned on, then the noid is good and the problem is elsewhere.