need help! outlaw 228 problem..

hey guys, newbie here, i bought an outlaw 228. one week after we installed it she downright just doesnt work anymore. first it was a high pitched hink unless i layed on it for a few seconds, but now it doesnt matter if i lay on it for 1 second or 20 it still just does an extremely short burst, yet when the tank is only half full or less she’ll hong as long as i hold the button for. we checked the solenoid and everything top to bottom looks fine, please help!

Welcome. Sounds like some kind of blockage (probably in the horn near the diaphragm). Make sure you clean it all out - tank, lines, horns etc.

Welcome to the forum. Their check valves are notorious for causing problems.