AppleTV (2013) HDMI/No Signal

I have
1. Brand New Apple TV (ATV) (2013)
2. LG LCD TV 1080P around 3 years old (Main TV in the house)
3. New IMAC
The LG TV wont pick up a signal from the ATV when connected to any HDMI port
(though it did work really well a month ago - no idea what changed. Frustrated I replaced the ATV today thinking it would solve my LG TV issue)
It did not
ATV is connected to my wireless network (this was set up through a small TEAC LCD TV in the house after becomming frustrated with the LG)
ATV airplay icon is visible on my IMAC and airplay works on the TEAC LCD.
I have tried adjusted the video output setting on the ATV to
1. RBG high - did not work
2. RBG low - did not work
3. AUto - did not work
I have also updated the software on the ATV - still did not work
help !

after spending an 0.5 hour on various alternative settings on the ATV, I still cannot get the LG LCD tv (42LD560) to pick up a HDMI signal from the ATV (remember this TV could pick up the signal a couple months ago)
I have tried 2 different HDMI cables (one thick the other thinner) and all 3 hdmi ports
I think the TV stopped recognising the hdmi signal when the ATV software was updated (ATV is currently on v5.3)

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Welcome to the HP Support Forums! It is a great place to find the help you need, both from other users, HP experts and other support personnel.
I understand that you are having trouble with the HDMI port on your notebook. I am happy to help with this. Please post the full product number for your notebook. See the following, if you need help with that information.
How Do I Find My Model Number or Product Number?
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Malygris1
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Hello hbirkie,
I recommend you take a look at this article named Apple TV (2nd and 3rd generation): Troubleshooting Wi-Fi networks and connections found here http://support.apple.com/kb/TS4546
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King regards

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AppleTV (2013) HDMI/No Signal

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