repairing 50 watt inverter

[aviyan]

My 50 watt inverter was damaged due to the mistake that I have put the opposite terminals of the battery to inverter. I think its MOSFET has been blown up. Please help me out how figure out the exact MOSFET out of the circuit board.

[X]

If you're lucky, it's just the fuse that's gone. Many of these inverters have a rectifier diode connected after the fuse in parallel with the input supply (reverse biased, of course) and when connected in the wrong polarity, the diode shunts the current and hopefully blows up the fuse. Worse case, the diode fails short-circuit.

[ATFForklifts]

Hope this article would help you to get rid out of this issue - http://www.powerelectronictips.com/how-and-when-mosfets-blow-up/

[Armadillo]

Can you send some close up photos of the board, top and bottom and mosfet so that members can help you identify parts.

Remember to discharge capacitor.