Panasonic UB820/UB9000 4K UHD Blu-ray player

[pbz06]

I always thought of it as a no-no (leaving disks inside the player when turning off).

That's not a fault worth risking other issues when taking it in for service...just my opinion of course.

[martinstraka8282]

Originally Posted by Jonathan McLeod

I absolutely, under no circumstances, would not return a player with only that "perceived" fault. Given you otherwise feel like you've got a reliable product I just wouldn't take the chance on being sent back something that suddenly starts skipping on certain discs, or overheating.

I mean, I do hear you because 4k discs are finnicky apparently and that's why I'm tempted to live with it here, but under no circumstances? If this were a game console, CD/DVD/BR player, computer, etc., it would have been returned already as I would expect them to work as advertised. The only reason it's even in question here is because of the reputation of 4k being problematic. I don't think something like this is something that consumers should be expected to live with, it's clearly faulty, it's just not crippling to the core use of the product.

Originally Posted by pbz06

I always thought of it as a no-no (leaving disks inside the player when turning off).

That's not a fault worth risking other issues when taking it in for service...just my opinion of course.

Really? That seems a little extreme. Every disc device I've ever owned be it game consoles, CD/DVD/BR players, computers, etc. have always had a disc in them 99% of the time and I've never seen it as the source of issues.

I know you're not supposed to move them with discs in them, but I've never heard of this line of thought.

I literally fall asleep on the couch about half the time I watch movies and finish them when I wake up or the next day, so in my circumstance it's pretty much unavoidable.

[cicada88]

Originally Posted by martinstraka8282

Really? That seems a little extreme. Every disc device I've ever owned be it game consoles, CD/DVD/BR players, computers, etc. have always had a disc in them 99% of the time and I've never seen it as the source of issues.

What he’s saying is definitely not an accepted thing.

You should definitely be able to leave a disc in your player and have it operate normally.

[martinstraka8282]

Originally Posted by cicada88

What he’s saying is definitely not an accepted thing.

You should definitely be able to leave a disc in your player and have it operate normally.

Ya that seems like a very unreasonable expectation and is the first time I've ever read that being suggested tbh.

[PUsokrJosh305]

Originally Posted by martinstraka8282

I mean, I do hear you because 4k discs are finnicky apparently and that's why I'm tempted to live with it here, but under no circumstances? If this were a game console, CD/DVD/BR player, computer, etc., it would have been returned already as I would expect them to work as advertised. The only reason it's even in question here is because of the reputation of 4k being problematic. I don't think something like this is something that consumers should be expected to live with, it's clearly faulty, it's just not crippling to the core use of the product.

Really? That seems a little extreme. Every disc device I've ever owned be it game consoles, CD/DVD/BR players, computers, etc. have always had a disc in them 99% of the time and I've never seen it as the source of issues.

I know you're not supposed to move them with discs in them, but I've never heard of this line of thought.

I literally fall asleep on the couch about half the time I watch movies and finish them when I wake up or the next day, so in my circumstance it's pretty much unavoidable.

I agree with pbz06, leaving a disc in the machine can be risky. I always take my discs out before turning the player off. I used to keep the discs in with my CD-ROMs or older video games. The discs themselves can get ruined and depending on the disc, the components of the player or disc drive can also be ruined.

Think about it. Every time you start up your player, the system has to check to make sure the disc drive works. If a disc is in there, it could screw up that check and possible harm the disc drive. Also, with blu-ray and 4K, you can go back to where you left off even if you take the disc out.

[martinstraka8282]

Originally Posted by PUsokrJosh305

I agree with pbz06, leaving a disc in the machine can be risky. I always take my discs out before turning the player off. I used to keep the discs in with my CD-ROMs or older video games. The discs themselves can get ruined and depending on the disc, the components of the player or disc drive can also be ruined.

Think about it. Every time you start up your player, the system has to check to make sure the disc drive works. If a disc is in there, it could screw up that check and possible harm the disc drive. Also, with blu-ray and 4K, you can go back to where you left off even if you take the disc out.

I have to be honest and say that I think the suggestion is extreme and bordering on paranoia, but would be open to being proven incorrect with any tests/studies that have been done. I think it could theoretically increase some mechanism usage within the machine, but wouldn't consider it "risky" as a practice, more so just additional "usage" of the device as intended.

The vast majority of consumers would not be willing to do this and thus would be a poor design of any disc reading device if it were potentially causing issues. So few consumers would be willing to do this that I would think it would be a widespread problem on many devices. I don't think my PS2/3/4 or now 5 have ever gone a day without a disc sitting in it and I've only ever RMA'd one of them for a different issue. If anything I would think that overusing the eject would be a higher probability of failure, like PS3 like disc injectors are notorious for.

I'm 36 years old and this is the first time I've ever heard this being suggested. I know I've always swapped the next disc for the last disc and I've never known anyone that made it a habit to do otherwise, nor have I ever read this in any manual.

[PUsokrJosh305]

Originally Posted by martinstraka8282

I have to be honest and say that I think the suggestion is extreme and bordering on paranoia, but would be open to being proven incorrect with any tests/studies that have been done. I think it could theoretically increase some mechanism usage within the machine, but wouldn't consider it "risky" as a practice, more so just additional "usage" of the device as intended.

The vast majority of consumers would not be willing to do this and thus would be a poor design of any disc reading device if it were potentially causing issues. So few consumers would be willing to do this that I would think it would be a widespread problem on many devices. I don't think my PS2/3/4 or now 5 have ever gone a day without a disc sitting in it and I've only ever RMA'd one of them for a different issue. If anything I would think that overusing the eject would be a higher probability of failure, like PS3 like disc injectors are notorious for.

I'm 36 years old and this is the first time I've ever heard this being suggested. I know I've always swapped the next disc for the last disc and I've never known anyone that made it a habit to do otherwise, nor have I ever read this in any manual.

That's very surprising because I have been doing that for awhile. Mind you the reason I started doing that was due to a former roommate of mine in college moved his Xbox while the game was still spinning, destroying the disc with a burned in ring. It was actually my game he borrowed. Mind you that was when the disc drive was "On" but I still take discs out, just in case someone would bump into the player or lift it to clean under it. You also run the risk of the disc getting joggled around and then when starting the player up, the spin could be off and ruin certain things in the player.

[cicada88]

There are advantages to always taking the disc out of the machine, but they don’t have to do with the machine’s operation itself.

1. If the machine literally breaks or malfunctions because of a power surge, etc., your disc could be stuck inside the player.

2. If you physically move the player somewhere else, the disc could get dislodged/ scratched.

3. If you have multiple players, or buy a new one etc, you could forget you had a disc and then not be able to find it.


Those are very minor advantages, that can be mostly overcome just by being aware of them.

This is common sense / personal preference. Leaving a disc in your player between uses should have no effect outside of extreme cases like extreme temperatures or moisture or something of that nature.

[martinstraka8282]

Originally Posted by PUsokrJosh305

That's very surprising because I have been doing that for awhile. Mind you the reason I started doing that was due to a former roommate of mine in college moved his Xbox while the game was still spinning, destroying the disc with a burned in ring. It was actually my game he borrowed. Mind you that was when the disc drive was "On" but I still take discs out, just in case someone would bump into the player or lift it to clean under it. You also run the risk of the disc getting joggled around and then when starting the player up, the spin could be off and ruin certain things in the player.

Don't get me wrong, I don't think there's anything wrong with removing discs every time as a habit, because as you and cicada88 point out, there are legitimate reasons for doing it, I'd just be surprised if it puts a machine at additional risk operationally.

If anything, my concern was that by ejecting and closing each time that I would ultimately put additional wear on the disc tray and that is something I've had fail on another device in my lifetime.

I definitely hear you on the risk of devices being moved with discs in them and manuals will always warn against that. Luckily I don't have roommates and my wife leaves the home theatre cleaning up to me.

I also have to say on a slightly comedic note that I don't think I could ever pull this off anyways... I fall asleep way too often when watching movies, probably about half the time, and I either wake up and finish them or wake up in a fog and crawl my way to bed.

[pbz06]

Hah, I didn't mean to start a debate and I most definitely didn't mean I had any scientific reason or basis for it other than that was my literal thought process (that it's a no no)...sorry for the confusion guys!

It's just something I either learned as a kid or a little bit OCD. I've never left cassette tapes in either, nor CDs in my Walkman or car player..I also turn off the radio before the car, straighten my seatbelts etc it just feels wrong

[martinstraka8282]

I tried a full factory reset last night and it seemed to be reading discs okay after being powered off. I only did the process 3 times, but it read the disc after being powered off each time, so maybe that did it. Probably should have tried that first, but didn't actually realize there was a full reset process other than the reset settings in the options menu.

Was tempted to try the chinese 1.66 firmware, but was concerned it might void my warranty if I did need a fix.

[bubaglobalj]

Hi, wonderful people. I just bought the Panasonic - DP-UB820 and have only now begun collecting 4K Ultra Blu-Rays. I figured it's time I'd hop on to this forum.

Currently debating if I should try to region unlock the device or not. I need to do more research on the subject...

[esmeron]

Hello
4K is region free, Blu-ray is locked to the region where you bought player. Still, some blurays discs are region free while there are studios which still region lock them.
https://forum.blu-ray.com/showthread.php?t=288327

[TAC]

Originally Posted by martinstraka8282

I tried a full factory reset last night and it seemed to be reading discs okay after being powered off. I only did the process 3 times, but it read the disc after being powered off each time, so maybe that did it. Probably should have tried that first, but didn't actually realize there was a full reset process other than the reset settings in the options menu.

Was tempted to try the chinese 1.66 firmware, but was concerned it might void my warranty if I did need a fix.

Do you have to register this product in order for the warranty to work? Hell, ive thrown the book away or misplaced it. Got the box but Im looking everywhere this morning for the paper work that came inside the box. Don't remember seeing it. Anyways, just curious if this player has to be registered or not? Thank you very much to whoever answers!

[martinstraka8282]

Originally Posted by TAC

Do you have to register this product in order for the warranty to work? Hell, ive thrown the book away or misplaced it. Got the box but Im looking everywhere this morning for the paper work that came inside the box. Don't remember seeing it. Anyways, just curious if this player has to be registered or not? Thank you very much to whoever answers!

It does not have to be registered, but you will need to have proof of payment to an authorized dealer.

[kevers7290]

I'm still having audio sync issues and I am not sure if the problem is my display (B8 OLED) receiver (Pioneer VSX531) or the player (820). I was using the dedicated HDMI audio out but I have switched to optical for the time being (at the expense of 192khz audio). Does anyone have a similar setup that can suggest the ideal settings/configuration for properly synced A/V? Does high clarity audio have any bearing on A/V sync?

[EddieLarkin]

On my E6 OLED I needed to introduce a 110ms delay for SDR and HDR, and a 210ms for Dolby Vision.

On my Panny HZ2000, 110ms works for all three modes.

[wxman2003]

Originally Posted by EddieLarkin

On my E6 OLED I needed to introduce a 110ms delay for SDR and HDR, and a 210ms for Dolby Vision.

On my Panny HZ2000, 110ms works for all three modes.

What's odd with my E6, with the OPPO 203, all formats are set to 80ms and no lip sync issues. With my 9000, it's different like yours. SDR and HDR are like yours, and DV was close to 230ms. I have no idea what the Panny is doing with DV that it's so vastly different than SDR and HDR, and so much different than the OPPO 203.

[trekky76]

Originally Posted by martinstraka8282

My UB820 will never read a disc when it is left in the machine and powered off. No matter the disc, it always says disc read error when I turn it back on.

It has had zero disc read errors otherwise and an eject and close always gets it to read the disc when this happens.

Anyone else have this issue by chance? I'm about to do a service with Panasonic, but am hesitant since there's been no other issues.

Sounds like a software error. Likely it doesn't perform a task in the correct order. Mine will play a disc I leave in the player but will always display the HDR banner until I remove it manually. So this seems to be open to glitches regardless. Your best bet is to always turn on the player with a disc inside with the eject button.

[Member-425016]

Originally Posted by martinstraka8282

I mean, I do hear you because 4k discs are finnicky apparently and that's why I'm tempted to live with it here, but under no circumstances? If this were a game console, CD/DVD/BR player, computer, etc., it would have been returned already as I would expect them to work as advertised. The only reason it's even in question here is because of the reputation of 4k being problematic. I don't think something like this is something that consumers should be expected to live with, it's clearly faulty, it's just not crippling to the core use of the product.

Really? That seems a little extreme. Every disc device I've ever owned be it game consoles, CD/DVD/BR players, computers, etc. have always had a disc in them 99% of the time and I've never seen it as the source of issues.

I know you're not supposed to move them with discs in them, but I've never heard of this line of thought.

I literally fall asleep on the couch about half the time I watch movies and finish them when I wake up or the next day, so in my circumstance it's pretty much unavoidable.

Going back to the late 80's I have never not left a disc in the machine, whether it be laserdisc, CD DVD, and on. If it was an issue in any of the hardware, I would have thought twice, but it wasn't/isn't.