So I have Sony Mutaki STR-KM7 and after being plugged into a specific power point in the house, we heard a big zap and now when you try to power it on, after a few seconds it goes into protect mode and shuts off (a similar situation has happened with a TV of ours and the same power point
![Scared :scared:](https://www.eevblog.com/forum/Smileys/default/scared.gif)
).
How do I figure out what specifically is causing the issue? I've tried testing all of the IC's and the emitter resistors like the guy in the youtube video I was watching but mine all seem to be fine. What do I do next?