phone restarts when pressing homebutton

hey people. i have this phone with several issues. wifi diden't work, no service, touch dissease and the homebutton dident work most of the time. 1/10 i did work. i,m pretty sure i reballed all the chips fine! wifi, service and touch works 100% now i replaced the home button. but when i press it now, the phone will restart. pretty weird i never experienced this before. should this be the homebutton ic? the phone had no waterdamage.. i also restored the phone but no errors