I was doing a moving job for relatives and had to set their network back up. In a state of fatigue I plugged a higher voltage cord into the router by mistake. Now, even with the right cord, the power lights won't come on. It still gets hot , so I know electricity is getting inside. I believe I shorted the Zener diode or blew a capacitor and would like to repair. Problem is, the case is smarter than I am, can't see a way to open it. It's a D-Link Model: DIR-615. Please help.