Can anyone spot any problems with the below project? I have limited funds and don't want to build it without knowing it will work.
The project is an AV switcher with the following features:
The device can switch between video inputs from 2 games consoles and an S-Video port from a laptop and send the video output to the RCA input of a TV.
The device can switch between audio inputs from the 2 games consoles, the TV itself and an extra input (could be connected to a phone, MP3 player, the laptop, etc.). This audio can then be sent to either a headphone socket or to an amplifier system I already have set up.
I have attached the circuit diagram. Switches with boxes around them indicate that they move in unison (ie. the second boxed switch is of the DPDT type).
PS. The image is quite small, I would suggest viewing it at 200%. I will try to upload a bigger version in a few minutes