Repair for yamaha dgx220

i plugged the power adapter into keyboard with the wrong voltage and heard a loud pop. the keyboard will not come on now. who in san diego does this repair or site i can send to .

If you are not able to do the work to replace the capacitor or capacitors that made that pop sound, see first what Yamaha can do for you. sounds like power supply look at the diagram of the circuit board see if you can dyi , good luck