The Official LG xxPK550 Owner's Discussion Thread [no price talk] - Page 173

Hi TechPrime

Not to answer for RB1213, but no it's not a subjective improvement, if you use a mirror while adjusting you will see the MLL literally drop (improve) just by adjusting the Set_up pot.
The 550 (at least most ) were reported to have excellent blacks but can still be improved on.
You can follow the Mods here.
http://www.avsforum.com/avs-vb/showthread.php?t=1372479

Help the my 50PK540 has audio video sync issues while watching broadcast tv! I do not see where it can be adjusted. Any body know how to do it?

Both Aperotti and MadW3rld mentioned screen tearing through STB's on their LG PK540/550's and I've been experiencing the same issue. I've now tried replacing all cables, replaced the DVR and even an HDMI Voltage Inserter. This only happens with my LG PK540, I have a Vizio 42 inch LCD and another 25 inch LCD that hooked up through my Denon 591 don't experience this screen tearing.

The screen tearing is occuring only when my DirecTV HD DVR is connected through the Denon 591, however, MadW3rld experienced this same issue with a Yamaha receiver and a Comcast HD DVR and Aperotti didn't have a receiver at all. Aperotti ended up fixing his issue by having them come out and replace the panel, I've had them do this and the problem is still there.

Anyone else noticing this screen tearing, or horizontal screen..rolling I suppose you'd call it with their set top boxes on their LG? This doesn't happen on any other sources except my HD DVR, and it doesn't happen on my HD DVR when plugged directly into the TV. I'm circumventing the problem by running HDMI cable directly to the TV and a Digital audio cable to the receiver. I"m pretty sure the TV is at fault, but I can't really prove that to LG since it only happens when passing through the Denon and only with one source.

Anyone having any issues like this?

Bump

@bladheadjim

Are you running this through a receiver of any sort, or is it a straight connection to your PK540? Did this just start? By broadcast tv, do you mean a cable box or OTA signal?

I do not believe there are any settings in the PK540 menus for lip-sync. Are you connected via HDMI?

Ota signal. Not using receiver. Just tv speakers.

I now have permanent burn in on my 60pk550 via the HD logo from the NFL network. So much for that myth

Have you tried the orbitor for a while?

I typically have it set to normal but have set it to orbiter several times.

To be honest, I dont understand how ISM could possibly help fix burn in. Can it?

I have had my 50pk550 since may 2010 and it has been great but in the last month the tv will turn on and play fine for a few minutes but then the picture will brighten.it happens in a flash.I have not been able to figure out what is causing this.the picture still looks great and is stable for the rest of the time I have it on but that quick brightening makes me think some thing is wrong.If anybody has a thought about this please let me know.

I've had my 50pk550 since March 2011 and have noticed the same brightening effect recently. The picture is stable at the brighter level, so I haven't worried much about it.

I have the 60PK540 and mine has done this for over a year. For some reason it just starts low and then jumps into high gear where it is stable for the rest of the day. It seems to not be a problem.

My black level was .018 ftL when I first got the TV. A year later it rose to around.033 (gray!). Last month I took the back off and performed the pot tweak described in the other thread (using a scope and multimeter to set at factory specs) and my black level is now .007. I am a firm believer in the effectiveness of this adjustment. It's fully 20-point calibrated now at the MLL of 0.007 and white point of 50 ftL giving 7000:1 contrast ratio. I love my LG 60PK540!

PS. All measurements for 60Hz input.

Think this is normal behaviour, see here - http://www.avsforum.com/avs-vb/showt...0#post19521800

Mine still does this, the colder the basement, the longer it takes to "brighten".

Will defiantly be doing this to my 50PK550 eventually, been lurking on the LG Plasma Panel tweaks for better blacks thread since it started. Just need to take the time to do it now that it seems to be a good stable tweak. Joy! cause my blacks suck now, have seen a definite rise since purchase in Aug 2010.

See any problem leaving the back off the set for a month or so, in case further adjustments are needed, I use a stand, so I can easily reach back there and fiddle around. Also, see any problem lifting and moving the set with the back off? example: like taking it off the stand, removing the back, lifting and putting on the stand again. (with back still off) Was concerned about how much the back adds to the rigidity of the set, don't want to damage anything.

Thanks

I see no problem leaving the back off for extended period as long as nobody touches it (kids?)

I suspect the back is a critical part of the panel support, so I would not feel comfortable moving it while it is off. Just my guess, but there's very little else holding these together it seems.

To me the back just feels flimsy almost like tinfoil once off so I don't think that structurally there would be an issue, however as rpauls points out, it does create somewhat of a hazard for kids or anyone else. The one drawback I saw to leaving it off was noise. my panel was significantly buzzier without the back panel on to muffle it.

Thanks for the response's everyone.I do have the TV in a room that is colder then the rest of my house so it may be related to the temp.I read through the tweak's tread and will be doing them,with a multimeter,after the super bowl.I am still on the fence about having Chad B come by and do a full calibration after the tweak.If the black level improves to the level that you have gotten rpauls do you think the calibration is necessary.

Update on screen tearing issue with DirecTV


I know some other members were having this issue. In my particular case I was getting screen tearing only when watching DirecTV with an HD DVR running through my Denon 591 when using HDMI. By setting the DirecTV to Native (on) and unchecking the 720p resolution in the DirecTV settings I was able to cure the screen tearing. All HD content seems to play at 1080i just fine without a noticeable difference in performance (including sports) and the screen tear is gone.

After months of swapping cables, ruling out sources and the receiver I'm chalking this up to an incompatibility between the LG PK540, the Denon 591 and the DirecTV box. Other people in the forums have had issues with different sets such as a Panny 600m ( http://www.avsforum.com/avs-vb/showt...1203467&page=3 ) and with different receivers as well, such as a Yamaha(By Madw3rld in this thread). I'm thinking at times HDMI is the source of a lot of these issues, but the convenience of it is essential to me.

I hope this information might help someone in the future so that's why I'm sharing

Thanks for all the help along the way guys.

My 50PK550 has a horrible case of burn in of a TV logo. I have tried several burn in repair methods but they do not work completely and the burn in returns with more viewing.

Is there a more permanent solution?

My LG 50PK550 Plasma tv monitor keeps cycling on and off for itself.

I unplug everything on the tv for a few hours.

When i plug in the tv, it turn on and shut down and after a few seconds turn on again and shut down.

My research indicate that it might be the digital control board.

How expensive is this gonna be ? Can it be fix at home or i need a tech ?

I own a 50PK250 and since I've had it (several years) I found that glass annoying. Every dark scene I watch I am staring back at myself.

I've found a few posts about removing the glass but only for cleaning purposes.

Hasn't anyone removed the glass permanently or isn't that very wise?

I can't believe there aren't more posts about that subject or am I not searching for the right keywords?

Love to hear some of your thoughts or read some if there are other posts that I have missed.

Cheers.

Very unwise to remove the glass. It provides protection and support for the panel.

I have actually grown to like the glossy surface. It is more transparent than the matte anti glare screens and this results in a clearer picture. During the day it is not so good, but I only watch at night. To avoid the reflections just turn the lights off.

Well I hate it and I can't watch without lights, its too hard on the eyes.

How about anti reflective spray? This site looks like snake oil sellers but if it works even half as good as they say it would help some.

https://www.glarebusters.com/index.asp

Hey guys, Is there a way to do a Master Reset on this TV? I tried doing a search but couldn't find anything. I think I got hit with a power surge and only HDMI3 seems to be working. I'm getting no signal through HDMI 1&2. I dont think that a reset would fix it but ill give it a shot. The text below is what I posted in the Denon AVR-1610 thread cause I am having issues with that too. Thanks!!

"This just happened to me too!! But I have 3 things that are affected. We had a bad rain storm here with lightning the other day when I wasn't home. I have a AVR-1610, PS3, Comcast/ Xfinity cable box and a LGpk550 Plasma TV. I tried turning on Tv as usual but all it did was flash the "No signal" box across the screen. Well after I performed all my amateur diagnostics on everything like checking all HDMI inputs and outputs on everything, swapping cable boxes from the bedroom Etc. The conclusion is the cable box doesn't work anymore, the reciever inputs do not work, the only input on the TV that works is HDMI3. The PS3 somehow rebooted itself. So it looks like I got some issues

a bit new to this thread BUUUUUUUUUUT,

am wondering if anyone has been able to use a mobile phone with DLNA on it and send images or video directly to this awesome television?
i can't even remember if the 50PK550N has DLNA or not.

any ideas?


thanks in advance

The US model does not DLNA or any network/internet features since there is no network connectivity for it. I don't know about the international models.

is there an adapter i can buy for this plasma so that DLNA does work?

HI guys,

I have the 55 inch PK550. I have my TV providing the optial out to my sound bar, as I have more optial input devices (four) than my LG soundbar has optical inputs (two), so I have my PK550 providing optical out to the sound bar.

The problem I am having is when commercials come on or the camera switches, etc, the audio cut sout for 5-10 seconds. it's almost like sit's having to handshake again with the TV (even though it's optical, so there is no handshake like with HDMI). Any settings I can change?

Thanks

Hi guys,

Another problem with my PK550 - I have green "noise" on the screen - Any way to fix?