Connecting denon 1713 amp to Apple TV 3, can't get sound to play through the amp

It is a known issue, but not common. You need service.

https://www.google.com/search?q=Denon+avr-1713.+Why+is+there+no+sound+output

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Your denon amp amp does not match and work well
in some players for instance "Samsung" no pictures
and sound via HDMI input. Only replacing players
to another brand such as LG can fix the problem.

You need a 3,5mm male stereo connector to RCA male jacks (see attached image). Plug the 3.5mm jack to your iPhone and the RCA jacks (red & white or red & black) to your Denon Receiver's CD in or Tape 1 or 2 PB (at the rear of the unit). Then select the input where you plugged the RCA to (front of receiver: CD / Tape-2 / Tape-1). Hope this will help.

25th May - 2014 - I contacted Denon and they said it needs a firmware update that they are working on but do not have a release date yet.

Has the Denon got a magnetic cartridge pre-amp built in? A good indication that it has will be if has a dedicated socket for a record deck. Connecting it to a tape or aux will only work if you purchase a separate Magnetic Cartridge pre-amp.

direct from Denons website "

Why can't I access Pandora on my Denon networked product?

Please be advised that Pandora has recently altered certain connection requirements which have temporarily blocked our products from connecting to the Pandora service. Our Engineering Dept. is currently working hard to correct this and will have a firmware update available as soon as possible via the internet to resolve this issue. This should not affect your product's ability to receive other music streaming services. Please visit our website for firmware update schedule information after December 6th.
We sincerely apologize for any inconvenience that Pandora's alteration has caused.

I would replace the audio cable from the CD player to the Denon amp, a long shot, if you have other devices hooked to the amp and plays fine, the problem will be in the CD player. However! if all sound sources have the same problem, the issue is with the Denon unit.

ensure that HDMI is selected in your sky settings.

you would not need an amp at all just to view sky, only if you were routing sound to say a surround system.

Are you only getting no sound from the tv? or are you getting sound via the amp but not from the tv?

Make sure your ipods tv out option is set to the on option from the menu and that you are sure you are on the correct input on the reciever.

If TV has AUDIO OUT and you hook up AUDIO OUT from TV to AUDIO IN on your system, it should play.