1987 TRX250 Electronic Ignition wont start bike?

Battery is new. Control Panel lights up when key is turned on. Headlight works. When I push the Start Button, I get a "clunk" sound from under the seat section. Bike will kickstart fine. After continued running, if I shut the bike off and try to restart with push start button, bike sounds like it wants to turnover, but only does so once and then nothing but the "clunk" sound again. Any Help would be appreciated. Thanks