Pioneer vsx-33 reciever switches input at startup

[lumbchuck]

Hello,
When I turn my system on, everything comes on and then the pioneer reciever changes the input that the TV is on (HDMI-3 to HDMI-5) for no reason

 

[soundguruman]

There is a reason, you have not set the default input.
http/www.pioneerelectronics.com/StaticFiles/Manuals/Home/VSX-33_OperatingInstructions0406.pdf
chapter 4, page 40, setting the default audio input.