Yamaha rx15 wont turn on

I bought in good condition until i plugged it in, it was running good for a good second then boom it died.. what should i do?

Get the schematics and check the power supply first. Hopefully it might be that.

Open it up and have a look inside - there is a little fuse. It may have popped due to the inrush as the RX15 hasn’t been used for some time