http://www.zalmar.com/detail-Misc-Sima-STP_1000.htm
Maybe it's the soft start circuit that went bad. The link I posted has one for $115 plus shipping.
http://www.powersystemsdirect.com/Sima/1000_Watt_12V_Titanium_Plus_Power_Inverter_STP-1000_1386.php[ Parent ]