Panasonic jz1500 – sounds keeps dropping when connected to soundbar

urstay

Novice Member
Hi,
So I bought a jz1500, connected a Panasonic soundbar and everything worked fine…for the first week or so. After that, the sound began to judder and then stopped working, when streaming content like Netflix, but this issue was intermittent and would work after a day, then not work and so on.
What’s strange is that, the sound is fine when not using the soundbar, but what’s even stranger is that the sound works perfectly, with the soundbar on, when streaming via a Fire stick.

The only time the sound doesn’t work is when using the native apps, inbuilt into the tv, when playing through a soundbar.

I’ve tested the soundbar on my LG and Samsung tv and it works fine, have also tested the cables and they’re fine. And I’ve just bought the Sony ht-a9 speakers and they have the exact same issue – a juddering sound when playing native apps through the TVs OS.

I just can’t figure out what the issue is?
And to make things more confusing, a engineer came out and replaced the motherboard, but the issue still persisted. Finally John Lewis swapped the tv for a new one, which arrived yesterday, and yep you’ve guessed it – same issue.

Maybe it’s an issue with my broadband, but then again LG tv is fine and it’s on the same network.
But one thing I’ve just noticed, is that the judder initiates when playing a Dolby atmos movie on Netflix or Disney plus.

So has anyone one else experienced sound drop out and juddering through external speakers?
And more importantly can anyone offer any advice?

As I’m considering swapping the Panasonic for an LG or Sony, which is a shame.
 

two2midnight

Distinguished Member
Hi,
So I bought a jz1500, connected a Panasonic soundbar and everything worked fine…for the first week or so. After that, the sound began to judder and then stopped working, when streaming content like Netflix, but this issue was intermittent and would work after a day, then not work and so on.
What’s strange is that, the sound is fine when not using the soundbar, but what’s even stranger is that the sound works perfectly, with the soundbar on, when streaming via a Fire stick.

The only time the sound doesn’t work is when using the native apps, inbuilt into the tv, when playing through a soundbar.

I’ve tested the soundbar on my LG and Samsung tv and it works fine, have also tested the cables and they’re fine. And I’ve just bought the Sony ht-a9 speakers and they have the exact same issue – a juddering sound when playing native apps through the TVs OS.

I just can’t figure out what the issue is?
And to make things more confusing, a engineer came out and replaced the motherboard, but the issue still persisted. Finally John Lewis swapped the tv for a new one, which arrived yesterday, and yep you’ve guessed it – same issue.

Maybe it’s an issue with my broadband, but then again LG tv is fine and it’s on the same network.
But one thing I’ve just noticed, is that the judder initiates when playing a Dolby atmos movie on Netflix or Disney plus.

So has anyone one else experienced sound drop out and juddering through external speakers?
And more importantly can anyone offer any advice?

As I’m considering swapping the Panasonic for an LG or Sony, which is a shame.
Use a firestick then instead of the native apps...
4K Firestick will be around £26.99 or less on Black Friday and 4K Max £36.99 or less if the recent two day price drops for these are anything to go by.
 

giantman

Novice Member
Hi i have the same tv and same problems mine was issue was with you tube dropping sound through my av amp then started to crackle through the speakers, spoke to Richer sounds whio said do a factory reset which i did, om for a couple of days but the problem persisted.
Checked all my cables thought my ethernet cable wasnt fully home on the router, so pushed it properly no diff did a reset again and now it can crackle through the speakers on Freeview and to correct it i turn the tv off and on again.
Ive done a hard reset unplugging from the mains and plugging back on after 60 s so will try again and see but not hopeful tbh.
 

urstay

Novice Member
Hi i have the same tv and same problems mine was issue was with you tube dropping sound through my av amp then started to crackle through the speakers, spoke to Richer sounds whio said do a factory reset which i did, om for a couple of days but the problem persisted.
Checked all my cables thought my ethernet cable wasnt fully home on the router, so pushed it properly no diff did a reset again and now it can crackle through the speakers on Freeview and to correct it i turn the tv off and on again.
Ive done a hard reset unplugging from the mains and plugging back on after 60 s so will try again and see but not hopeful tbh.
Yeah it’s a wired one this? Looks like it’s a Panasonic software issue, as this is my 2nd tv and still the issue persists.
I have noticed if you switch the input to AV then launch the app from there, then the sound is fine. However this only lasts a few days or so.
 

urstay

Novice Member
Use a firestick then instead of the native apps...
4K Firestick will be around £26.99 or less on Black Friday and 4K Max £36.99 or less if the recent two day price drops for these are anything to go by.
Hi,
That’s is an option. However the sound has started dropping out on this too, but not as severe as on the apps and it’s just occasional.
The only thing is why keep on to brand new tv which has these issues, as my 6 year Samsung tv works absolutely fine.
 

Kings119

Active Member
Hi,
I have had similar problems With my 2 week old jz1500. The tv is connected to my denon avr through the earc hdmi plug. When I switch to Netflix using the inbuilt app I get very distorted sound. Completely unwatchable. Turning both the tv and denon off at the wall and then on again sorts the sound issue. Very annoying!
 

rdb

Novice Member
Hi,
So I bought a jz1500, connected a Panasonic soundbar and everything worked fine…for the first week or so. After that, the sound began to judder and then stopped working, when streaming content like Netflix, but this issue was intermittent and would work after a day, then not work and so on.
What’s strange is that, the sound is fine when not using the soundbar, but what’s even stranger is that the sound works perfectly, with the soundbar on, when streaming via a Fire stick.

The only time the sound doesn’t work is when using the native apps, inbuilt into the tv, when playing through a soundbar.

I’ve tested the soundbar on my LG and Samsung tv and it works fine, have also tested the cables and they’re fine. And I’ve just bought the Sony ht-a9 speakers and they have the exact same issue – a juddering sound when playing native apps through the TVs OS.

I just can’t figure out what the issue is?
And to make things more confusing, a engineer came out and replaced the motherboard, but the issue still persisted. Finally John Lewis swapped the tv for a new one, which arrived yesterday, and yep you’ve guessed it – same issue.

Maybe it’s an issue with my broadband, but then again LG tv is fine and it’s on the same network.
But one thing I’ve just noticed, is that the judder initiates when playing a Dolby atmos movie on Netflix or Disney plus.

So has anyone one else experienced sound drop out and juddering through external speakers?
And more importantly can anyone offer any advice?

As I’m considering swapping the Panasonic for an LG or Sony, which is a shame.
I have a similar issue with Xbox Series X on the JZ2000 and I had to change one of the eARC ports to MODE 2 rather than MODE 3 to stop the problem, I think on the 2000 it's something to do with VRR / 120hz causing a problem with the eARC HDMI ports. If you have the MODE Option in MENU / SETUP / HDMI Auto Setting. They are working on a VRR fix, so hopefully this will resolve the problem, I spent months trying to work out what it was.
 
Last edited:

urstay

Novice Member
I have a similar issue with Xbox Series X on the JZ2000 and I had to change one of the eArc ports to MODE 2 rather than MODE 3 to stop the problem, I think on the 2000 it's something to do with VRR / 120hz causing a problem with the eARC HDMI ports. If you have the MODE Option in MENU / SETUP / HDMI Auto Setting. They are working on a VRR fix, so hopefully this will resolve the problem, I spent months trying to work out what it was.
So are you experiencing sound issues from the tv speakers? Or is it from external speakers?
I thought it was something to do with the vrr as that’s the only difference between the hz200 and jz200 and I know a lot of manufacturers are having a tough time with it, as it produced by an external company.
 

urstay

Novice Member
Hi,
I have had similar problems With my 2 week old jz1500. The tv is connected to my denon avr through the earc hdmi plug. When I switch to Netflix using the inbuilt app I get very distorted sound. Completely unwatchable. Turning both the tv and denon off at the wall and then on again sorts the sound issue. Very annoying!
Have you tried launching Netflix from the AV input, instead of hdmi 1 to 4, as this usually fixes the issues until I turn the tv ooff and in again.
 

rdb

Novice Member
Any device that's plugged into HDMI 1 or 2 the eARC ports cause sound stuttering issues on the TV, but if I switch the port in settings to MODE 2 it stops the ATMOS from dropping in and out.

I know you're using a sound bar, but I wondered if it was through one of the eARC ports and it may be causing the issue as your description matches mine, though mine happens on the TV, it only happens if the eARC ports are set to Mode 3.
 

urstay

Novice Member
Any device that's plugged into HDMI 1 or 2 the eARC ports cause sound stuttering issues on the TV, but if I switch the port in settings to MODE 2 it stops the ATMOS from dropping in and out.

I know you're using a sound bar, but I wondered if it was through one of the eARC ports and it may be causing the issue as your description matches mine, though mine happens on the TV, it only happens if the eARC ports are set to Mode 3.
That confirms my suspicions as the Theatre system is plugged into hdmi 2, which is using the earc port. Hence the dropout in sound.
Unfortunately this sound system only works through earc.
I’ve also played disc movies through Xbox via hdmi 1and occasionally get a blip in sound.
 

rdb

Novice Member
That confirms my suspicions as the Theatre system is plugged into hdmi 2, which is using the earc port. Hence the dropout in sound.
Unfortunately this sound system only works through earc.
I’ve also played disc movies through Xbox via hdmi 1and occasionally get a blip in sound.
What happens if you switch the TV / Menu / Setup / HDMI Auto Setting from Mode 3 to Mode 2?
 

urstay

Novice Member
What happens if you switch the TV / Menu / Setup / HDMI Auto Setting from Mode 3 to Mode 2?
Same issue, it only corrects itself if I launch the streaming app from the AV input, but for some reason the sound is t that good when played on AV…
 

urstay

Novice Member
Same issue, it only corrects itself if I launch the streaming app from the AV input, but for some reason the sound is t that good when played on AV…
But what I have noticed, if I plug a fire stick into the hdmi on the theatre system and launch Netflix through there, the sound is perfect, even if on mode 3. Only issue is you loose the Netflix calibrated mode.
 

rdb

Novice Member
I had another issue with slight image judder but that was caused by Intelligent Frame Creation, I had to disable it on all of the picture settings, for some reason it was doing this to the picture, I doubt that's causing it, but nothing to lose by having a go.


downfalls of being an early adopter....
 

rdb

Novice Member
I noticed it only happened on settings where the picture had a lot of brightness, it didn't matter which source, freeview, freesat, HDMI etc, but disable IFC and it goes away.
 

stephentw

Active Member
I think I've got this issue with my JZ1500. I've got an Xbox Series X in HDMI 1 then eARC from HDMI 2 to Denon amp, no matter whether I use bitstream or PCM setting on Xbox I get sound dropping out ocassionally.

I initially thought it was 120hz mode on the xbox video settings but it happens in 60hz mode too. I haven't tried the different hdmi modes on the TV yet but if I connect the Xbox to the amp I don't get the issue.

I'm getting lip sync issues on netflix through the xbox too.

Has anyone contacted Panasonic about it?
 

urstay

Novice Member
I think I've got this issue with my JZ1500. I've got an Xbox Series X in HDMI 1 then eARC from HDMI 2 to Denon amp, no matter whether I use bitstream or PCM setting on Xbox I get sound dropping out ocassionally.

I initially thought it was 120hz mode on the xbox video settings but it happens in 60hz mode too. I haven't tried the different hdmi modes on the TV yet but if I connect the Xbox to the amp I don't get the issue.

I'm getting lip sync issues on netflix through the xbox too.

Has anyone contacted Panasonic about it?
Yeah,
I’ve contacted Panasonic. They sent out an engineer who then replaced the motherboard, but a few hours later the issue came back.
I then swapped it out for a brand new tv, but the issue was present on that aswell.
Panasonic tried blaming my wifi network, but the tv has a wired connection into the router and has a minimum speed of 75mbps, so that wasn’t the issue.
When it happens again next try switching to AV input then play something on Netflix. Then switch back to hdmi 1 or 2 and launch your x box. This usually flushes out the issue for me.
But it will come back once you turn the tv off.

I think it’s a software issue on their OS, which they’re not admitting to.

I’m probably going to swap it for a Sony or LG, as I’ve still got 28 days to return.
 

stephentw

Active Member
Yeah,
I’ve contacted Panasonic. They sent out an engineer who then replaced the motherboard, but a few hours later the issue came back.
I then swapped it out for a brand new tv, but the issue was present on that aswell.
Panasonic tried blaming my wifi network, but the tv has a wired connection into the router and has a minimum speed of 75mbps, so that wasn’t the issue.
When it happens again next try switching to AV input then play something on Netflix. Then switch back to hdmi 1 or 2 and launch your x box. This usually flushes out the issue for me.
But it will come back once you turn the tv off.

I think it’s a software issue on their OS, which they’re not admitting to.

I’m probably going to swap it for a Sony or LG, as I’ve still got 28 days to return.
Oh great! The last thing we need is an issue that they won't admit to or fix. Seems likely the VRR firmware fix might do something though if mode 2 makes the issue go away?

So the workaround you found, if theres sound dropout on xbox in hdmi 1, switch to Netflix? Do you mean the TV's internal Netflix? If that's the case maybe it's a handshake issue and doing this forces it to do the handshake again?
 

urstay

Novice Member
Oh great! The last thing we need is an issue that they won't admit to or fix. Seems likely the VRR firmware fix might do something though if mode 2 makes the issue go away?

So the workaround you found, if theres sound dropout on xbox in hdmi 1, switch to Netflix? Do you mean the TV's internal Netflix? If that's the case maybe it's a handshake issue and doing this forces it to do the handshake again?
Yes, the native Netflix app but make sure switch inputs to AV before launching it. Then you can switch back to hdmi 1.
 

Beemer3

Standard Member
Hi,
So I bought a jz1500, connected a Panasonic soundbar and everything worked fine…for the first week or so. After that, the sound began to judder and then stopped working, when streaming content like Netflix, but this issue was intermittent and would work after a day, then not work and so on.
What’s strange is that, the sound is fine when not using the soundbar, but what’s even stranger is that the sound works perfectly, with the soundbar on, when streaming via a Fire stick.

The only time the sound doesn’t work is when using the native apps, inbuilt into the tv, when playing through a soundbar.

I’ve tested the soundbar on my LG and Samsung tv and it works fine, have also tested the cables and they’re fine. And I’ve just bought the Sony ht-a9 speakers and they have the exact same issue – a juddering sound when playing native apps through the TVs OS.

I just can’t figure out what the issue is?
And to make things more confusing, a engineer came out and replaced the motherboard, but the issue still persisted. Finally John Lewis swapped the tv for a new one, which arrived yesterday, and yep you’ve guessed it – same issue.

Maybe it’s an issue with my broadband, but then again LG tv is fine and it’s on the same network.
But one thing I’ve just noticed, is that the judder initiates when playing a Dolby atmos movie on Netflix or Disney plus.

So has anyone one else experienced sound drop out and juddering through external speakers?
And more importantly can anyone offer any advice?

As I’m considering swapping the Panasonic for an LG or Sony, which is a shame.
To answer your question and the reason I came here is that "yes" I have the same TV and the same problem. Stuttering audio when using the TV speakers and no sound at all when trying to use the TV's Netflix app. I'm using HDMI2 to try to get ARC to work with my Anthem MRX520 AVamp but it does not work neither do I get any TV sound when connecting a TOSLINK cable TV to AV amp.
TV is ethernet connected. I have to use Virgin TV360 service to get Netflix sound. Normally this would not be a problem but Virgin frequently has 'cannot play this video just now' whilst Netflix video, but not sound, plays on the TV app. From what I'm reading in this thread Panasonic are not admitting there is a problem. This can only get worse as I have read that Panasonic have, or will transfer production outside their company.
Update: I now find that changing the TV optical output to PCM then transmits sound but is a terrible unlistenable sound quality.
 
Last edited:

urstay

Novice Member
To answer your question and the reason I came here is that "yes" I have the same TV and the same problem. Stuttering audio when using the TV speakers and no sound at all when trying to use the TV's Netflix app. I'm using HDMI2 to try to get ARC to work with my Anthem MRX520 AVamp but it does not work neither do I get any TV sound when connecting a TOSLINK cable TV to AV amp.
TV is ethernet connected. I have to use Virgin TV360 service to get Netflix sound. Normally this would not be a problem but Virgin frequently has 'cannot play this video just now' whilst Netflix video, but not sound, plays on the TV app. From what I'm reading in this thread Panasonic are not admitting there is a problem. This can only get worse as I have read that Panasonic have, or will transfer production outside their company.
It's a shame, as the TV is picture is superb. I've spoken to John Lewis and even they're baffled by it. They agreed to swap the Panasonic for the Sony A90J, so hopefully that will be that.
In the meantime i've noticed that switching the input to AV then launching Netflix from there and then switching back to HDMI2, sorts the issue out.
 

Beemer3

Standard Member
It's a shame, as the TV is picture is superb. I've spoken to John Lewis and even they're baffled by it. They agreed to swap the Panasonic for the Sony A90J, so hopefully that will be that.
In the meantime i've noticed that switching the input to AV then launching Netflix from there and then switching back to HDMI2, sorts the issue out.
Sorry I don't understand what you mean by switching back to HDMI2? I only have one HDMI cable from my AV amp to the TV. Do you have two?
 

urstay

Novice Member
Sorry I don't understand what you mean by switching back to HDMI2? I only have one HDMI cable from my AV amp to the TV. Do you have two?
No,
Sorry what I mean is; launch the Netflix from AV buy pressing the AV button on the Panasonic remote, then scroll down to AV. Then launch NETFLIX.
When I does this the sound still comes out of the external speakers and comes out fine.
 

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