pioneer multichannel reciver vsx-521 shuts off with nothing hooked up

[brud64]

pioneer multichannel reciver vsx-521 when you power it on it stays on a few seconds and powers off troubleshooting

 

[jFiveNYC]

Is this a new problem, new receiver?

 

[makkem]

Hi
When you say nothing hooked up does that include the speakers.