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ATV2 new OS caused output to 4KTV blank?

Bentendo

Bentendo

macrumors newbie
Original poster
Jul 1, 2015
8
0
Hi,

I've used my ATV2 box with my LG UV800B since last year, with no issues whatsoever.

However recently I updated the OS to the latest available firmware for a 2nd gen ATV, and suddenly it will no longer give me a picture on a 4KTV. The standard HD television at my friends gets a picture okay, but my LG 4KTV since the software update doesn't even receive a signal, never mind a picture!

I have tried DFU in iTunes and restoring the device, which doesn't cause an issue. However the moment it's put back into the telly, I get no results.

Any ideas?

Thanks,
Ben.
 
Check your resolution is auto and try different underscan settings.
 
I have tried the resolution mode where if you press menu and up to make it alternate every 20 seconds, but it achieves nothing sadly.

Also tried setting it to both 50hz and 60hz modes for 720p and neither worked on the 4KTV but were fine on the HDTV, despite working fine on the former television pre firmware upgrade.
 
Maybe check the cables? Could be your ATV needs to be replaced too. This seems odd. Your TV should be smart enough to figure out what it's getting signal wise. Maybe unplug the ATV and do a hard restart. I'm finding even with the 3 and 4 this is a good idea with updates. Seems to clear out a cobweb or two.
 
Snoopy4 said:
Maybe check the cables? Could be your ATV needs to be replaced too. This seems odd. Your TV should be smart enough to figure out what it's getting signal wise. Maybe unplug the ATV and do a hard restart. I'm finding even with the 3 and 4 this is a good idea with updates. Seems to clear out a cobweb or two.
Click to expand...

I've factory reset the device through iTunes, and as I say, works perfectly fine on older 1080p televisions. Just doesn't even act as detected anymore on my 4K television. Tried multiple cables also.
 
Bentendo said:
Hi,

I've used my ATV2 box with my LG UV800B since last year, with no issues whatsoever.

However recently I updated the OS to the latest available firmware for a 2nd gen ATV, and suddenly it will no longer give me a picture on a 4KTV. The standard HD television at my friends gets a picture okay, but my LG 4KTV since the software update doesn't even receive a signal, never mind a picture!

I have tried DFU in iTunes and restoring the device, which doesn't cause an issue. However the moment it's put back into the telly, I get no results.

Any ideas?

Thanks,
Ben.
Click to expand...
My guess for what it's worth is your HDMI cable. I know you have tried different cables. My question is are they new cables that are HDMI 2.0 & HDCP 2.2 compliant? As i myself have had to change some of my HDMI cables.
My other suggestion is to upgrade to ATV4 which outputs 1080p vs 720p on the ATV2. I have the new ATV4's on all my tv's & the speed alone is worth the upgrade. Hope this helps
 
Bentendo said:
I've factory reset the device through iTunes, and as I say, works perfectly fine on older 1080p televisions. Just doesn't even act as detected anymore on my 4K television. Tried multiple cables also.
Click to expand...

That's just weird. Cables should be fine because you're only using 1080p at best even with a 4K set. Maybe see if the set has an update? Another think might be audio return. See if it's plugged into that. If so turn it off in the menu or try another input. If found on occasion ARC can confuse older devices. It's rare, but it's the last thing I can think of that might be causing a problem. You've done everything else right.
 
Snoopy4 said:
Could be. Maybe a full reset of the device...
Click to expand...

Tried both non ARC inputs as well as full factory reset through iTunes and nothing. As I say, shows fine on a 1080p screen, but is no input on a 4K screen.

Can't understand it, was just the standard update allowing mirroring of picture on iOS 9 etc. No firecore messing or anything.
 
Bentendo said:
Tried both non ARC inputs as well as full factory reset through iTunes and nothing. As I say, shows fine on a 1080p screen, but is no input on a 4K screen.

Can't understand it, was just the standard update allowing mirroring of picture on iOS 9 etc. No firecore messing or anything.
Click to expand...

Man that is just weird. Maybe time for a trip to the Apple Store...
 
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