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Official Samsung LNxxA750 Owners Thread - Page 410

post #12271 of 12492
We have had our LN46A750R1FXZA for just over one year (Christmas 2008). It has developed a very serious picture problem. Especially when watching sports or playing games, sets of thin vertical lines appear typically in red or green. They seem to emanate from graphics at the bottom of the screen, football down markers, etc.

This is a very serious PQ problem, the thing is virtually unwatchable. The nearest service center is 20 miles away.

I searched the forum to no avail. Any ideas? (I have done a reset to original factory settings -- it made the problem worse)
post #12272 of 12492
Quote:
Originally Posted by kansashick View Post

We have had our LN46A750R1FXZA for just over one year (Christmas 2008). It has developed a very serious picture problem. Especially when watching sports or playing games, sets of thin vertical lines appear typically in red or green. They seem to emanate from graphics at the bottom of the screen, football down markers, etc.

This is a very serious PQ problem, the thing is virtually unwatchable. The nearest service center is 20 miles away. hed the forum to no avail. Any ideas? (I have done a reset to original fafew ctory settings -- it made the problem worse)

hmmm. a few questions does this happen on all sources (ie HDMI,component etc?) where are the lines when they occur (ie bottom,top, middle etc?) is it only on certain channels?
post #12273 of 12492
It is on all sources and all channels. The lines emanate typically from red colored objects at the bottom of the screen such as down markers in football or score graphics in basketball or just about anything on the PS3. They are thin, light, red vertical lines.
post #12274 of 12492
Quote:
Originally Posted by kansashick View Post

It is on all sources and all channels. The lines emanate typically from red colored objects at the bottom of the screen such as down markers in football or score graphics in basketball or just about anything on the PS3. They are thin, light, red vertical lines.

man, sorry to hear about that problem, it might be time to upgrade to a new tv perhaps
post #12275 of 12492
Quote:
Originally Posted by kansashick View Post

It is on all sources and all channels. The lines emanate typically from red colored objects at the bottom of the screen such as down markers in football or score graphics in basketball or just about anything on the PS3. They are thin, light, red vertical lines.

What it sounds like is a bad lcd panel. Samsung has been known to have these issues and usually the solution is a new lcd panel. Some have tried unplugging the set from the power supply and unplugging all the components. Then plug everything back in and rarely it can fix the issue. Sadly this is not a cheap fix ( usually cost more than $1200 for the part alone depending on the size not including labor )
My TV has the same issue but I luckily bought a extended warranty from BB. I had a few lines going across my screen when I was watching a movie and the next day the TV wouldnt turn on. My TV has now not been working for going on 3 weeks while they decide if they are going to replace the panel or give me a new set ( will be my third by the way )
Samsung, the best PQ on the market but they dont last.
post #12276 of 12492
Well my LN52A750 is now officially 1 year old today,so far I have been lucky,no problems so far.I really feel bad for all the people here that are having lots of problems.It seems like the problems happen between 1 to 2 years after purchase.I guess I will see if this will happen to me,fingers crossed.
post #12277 of 12492
Quote:


Samsung, the best PQ on the market but they dont last.

I have had mine for over 1 yr and no problems. So I don't agree that they don't last. Any new technology is bound to have some percentage of defects. These aren't CRTs...
post #12278 of 12492
Quote:
Originally Posted by OldAKGuy View Post

Hi, scanless,

Check Pgs. 26 & 27 of the User manual and set the screen size on non-HD channels to 16:9 or try the Wide Fit setting. If you receive your signal through a STB (DirecTV, Dish, etc.) you can set it up through that box.

Hope this helps.

OldAKGuy

Thanks!!! looked it up and it worked thanks again OldAKGuy!!!
post #12279 of 12492
Quote:
Originally Posted by Sneaky View Post

I have had mine for over 1 yr and no problems. So I don't agree that they don't last. Any new technology is bound to have some percentage of defects. These aren't CRTs...

Agreed I dont see that many reports myself.
post #12280 of 12492
Quote:
Originally Posted by Sneaky View Post

I have had mine for over 1 yr and no problems. So I don't agree that they don't last. Any new technology is bound to have some percentage of defects. These aren't CRTs...

+1. I've had mine for a year and a half. No problems at all, except I wish I'd stepped up and bought the 52"
post #12281 of 12492
I've had my 750 for about 15 months and knock on wood no problem with this one. I did have a 71 series that had issues but samsung replaced it under warranty. That being said the people on here are usually ahead of the curve as far as problems and issues and it seems like samsung is aware of the capacitor issues. I guess all we can do is cross our fingers and hope our set continues to function as it currently does.
post #12282 of 12492
Quote:
Originally Posted by scanless View Post

Thanks!!! looked it up and it worked thanks again OldAKGuy!!!

Hi, scanless,

You're welcome and glad you got it the way you want it.

Enjoy your set!

OldAKGuy
post #12283 of 12492
I have a Scientific Atlanta 8300HDC HiDef Cable Box (Time Warner), which I have connected to my Samsung LN46A750 via a HDMI cable.

I have a receiver, a Sony str-se501 which does not have an HDMI.

So I ran an Optical cable from the Cable Box to the Receiver.

When I have the enable the audio configuration in the cable box set to HDMI, I only get a PCM48 output to the receiver and the TV speakers work. If I switch the output of the receiver to 5.1 I get Dolby on the receiver, but no audio on the TV. For some reason I cannot turn on Multi-channel audio on the TV, unless it is in analog mode. I am not sure what that means, or why. Ideally I would like to have Stereo to the TV (delivered via HDMI), and 5.1 to the receiver. I believe I should not have to run RCA L/R cables. What am I doing wrong?
post #12284 of 12492
Quote:
Originally Posted by Sneaky View Post

I have had mine for over 1 yr and no problems. So I don't agree that they don't last. Any new technology is bound to have some percentage of defects. These aren't CRTs...

Well sadly in my experience they dont last. I have had three Samsung LCD's and not one of them has made it to a year yet. Either thats really bad luck or just some weird coincidence. Hey look I love em thats why I keep buying them but I will only get them with extended warranties.
On thursday morning I have a tech coming out to replace the LCD panel, PSU and all the boards on my A750. So the only original part on the TV will be the bezel. Im glad I am one of the rare exceptions because if you are out of warranty and you had my problems you would have one costly paper weight.
post #12285 of 12492
Wow...I only read the last couple pages...came to find out about an audio sync issue I have. Wish I hadn't seen all these problems with the set.

I took delivery of my 52A750 on 12/16/08. I didn't buy an extended warranty but am now thinking I need to.

amazon offers several....anybody have experience with SquareTrade 3 yr or would I be better to get the Official Samsung Extended Service plan 3 yr? There is a Mack 5 year plan too...

I had hoped this TV would last 10 years....doesn't seem like that a possibility now.

Any suggestions?

Thanks!
post #12286 of 12492
HELP I recently went into the service menu and made some changes.I did not like how the picture looked is there a way i can reset the settings to its original settings.
post #12287 of 12492
Quote:
Originally Posted by mismith356 View Post

Wow...I only read the last couple pages...came to find out about an audio sync issue I have. Wish I hadn't seen all these problems with the set.

I took delivery of my 52A750 on 12/16/08. I didn't buy an extended warranty but am now thinking I need to.

amazon offers several....anybody have experience with SquareTrade 3 yr or would I be better to get the Official Samsung Extended Service plan 3 yr? There is a Mack 5 year plan too...

I had hoped this TV would last 10 years....doesn't seem like that a possibility now.

Any suggestions?

Thanks!

I had a good experience with Samsung's customer service but others have not. I would go with their extended warranty myself. If I were you I would rather be safe than sorry. I had a sync issue on my LG and a board had to be replaced. So it may be a fix like that, not sure though.
post #12288 of 12492
Quote:
Originally Posted by ellpolo_loco View Post

What it sounds like is a bad lcd panel. Samsung has been known to have these issues and usually the solution is a new lcd panel. Some have tried unplugging the set from the power supply and unplugging all the components. Then plug everything back in and rarely it can fix the issue. Sadly this is not a cheap fix ( usually cost more than $1200 for the part alone depending on the size not including labor )
My TV has the same issue but I luckily bought a extended warranty from BB. I had a few lines going across my screen when I was watching a movie and the next day the TV wouldnt turn on. My TV has now not been working for going on 3 weeks while they decide if they are going to replace the panel or give me a new set ( will be my third by the way )
Samsung, the best PQ on the market but they dont last.

Thanks for the suggestion -- it did not work. I called the Samsung service center but they would not come out to look at the set because they are too busy with warranty work. They are the only authorized service facility on the Kansas side of the KC metro area (population approximately 600,000). Another, non-authorized outfit is comeing tomorrow to look at the set.

If it's the panel and a >1200 fix, this thing is going in the garbage and I will move back to Sony.

I will never buy a Samsung product again!
post #12289 of 12492
Quote:
Originally Posted by ellpolo_loco View Post

I had a good experience with Samsung's customer service but others have not. I would go with their extended warranty myself. If I were you I would rather be safe than sorry. I had a sync issue on my LG and a board had to be replaced. So it may be a fix like that, not sure though.

Thanks ellpolo_loco!

Can the extended warranty be purchased after the initial 1 year warranty is over or did it have to be purchased with the TV...anybody know?

I am gonna see if amazon lists any term or conditions.
post #12290 of 12492
Anyone able to provide the mainboard model/part # as I think mine is fried. I swapped the powersupply board and it's still demonstrating the same problem

see thread

http://www.avsforum.com/avs-vb/showthread.php?t=1215313

There's really only 2 other boards out there, the tcon board and the main board right?
post #12291 of 12492
Quote:
Originally Posted by -=phelan=- View Post

Anyone able to provide the mainboard model/part # as I think mine is fried. I swapped the powersupply board and it's still demonstrating the same problem

see thread

http://www.avsforum.com/avs-vb/showthread.php?t=1215313

There's really only 2 other boards out there, the tcon board and the main board right?

the problem you have is the exact same problem I have. I will ask the tech tomorrow what model/part # is. I am literally getting everyboard replaced along with the LCD panel which the tech said is fried. So I will ask what the LCD panel part# number is as well. You may have to replace the LCD panel
which then wouldnt be worth it
post #12292 of 12492
damn...if i have to replace the lcd panel i ain't going to be buying a samsung in the future...1 yr and 5 months...give me a break...i'll take my business elsewhere and i'll spread the word to my family too.

ellpolo_loco - if you could get the main board part # that'd be great and i'll swap that and see if it works. If it doesn't, it's the panel and pretty much SOL'ed.
post #12293 of 12492
Quote:
Originally Posted by -=phelan=- View Post

damn...if i have to replace the lcd panel i ain't going to be buying a samsung in the future...1 yr and 5 months...give me a break...i'll take my business elsewhere and i'll spread the word to my family too.

ellpolo_loco - if you could get the main board part # that'd be great and i'll swap that and see if it works. If it doesn't, it's the panel and pretty much SOL'ed.

I will get all that info. Trust me Im not very happy and I'm a lil confused. Why does this tv need a new LCD panel? Also from what I have heard the replacement Lcd panels are inferior to the original panels in our sets. Well I guess I will find out tomorrow for sure.
post #12294 of 12492
well some bad news phalen, the tech replaced the PSU and the LCD panel and it was a no go. So now I get a replacement of my choosing through BB ( which is fine by me ). He suggested a Sony he said even on the new model LED Samsung he has been replacing LCD panels like crazy. Still I might get another Samsung.
The other thing he said was the problem in our case is usually PSU not the main board. So he doesnt suggest replacing that. He was very surprised it didnt work and seemed to think that the replacement LCD was bad. Anyways he said he needs the exact model code and the version of your TV and I will call him and he will get the part # for you. He also said if you lived near by he would help you with the install ( for free. ) Nice guy and a very good tech. He said depending on the size of your set and version it might be a different board compared to mine.
post #12295 of 12492
^^ hey thanks man for all your help. Looking like i'm SOL'ed at the moment but i sent you a PM with the model and version #.

Hopefully it's just the main board and i'll be able to swap that and be done with this as i've been without this .t.v for a month now!
post #12296 of 12492
updated my original thread with my problems on this unit...

http://www.avsforum.com/avs-vb/showthread.php?t=1215313

i'm going to see if my friend who has the same unit will be kind enough for me to let me borrow his main board for a test although i highly doubt it!~
post #12297 of 12492
heres some info for those of you who are out of warranty and might need these parts down the line. These are for the SQ01 panel but all in all should work for most.

Main board: BN94-01708G Power board: BN44-00203A
Encompass Part Distribution telephone numbers (800) 638-3328 (800) 432-8542. Call them for pricing.
post #12298 of 12492
The repairman came out and looked at the TV. There is an L shaped ribbon connector between the board and the LCD panel. When he wiggled it, the artifact disappeared or got worse or the tv died. He thinks that this is the problem and has ordered a replacement. We'll see what happens. In any case, this was my first and will be my last Samsung product.
post #12299 of 12492
Quote:
Originally Posted by kansashick View Post

The repairman came out and looked at the TV. There is an L shaped ribbon connector between the board and the LCD panel. When he wiggled it, the artifact disappeared or got worse or the tv died. He thinks that this is the problem and has ordered a replacement. We'll see what happens. In any case, this was my first and will be my last Samsung product.


Yeah I saw that connector when they took apart my TV. I wonder if that is why all the replacement parts havent fixed my set. I was hoping to get store credit for a replacement but BB wants to keep trying to repair the set. At this point it has been over a month and it looks like I will be waiting another week or two for them to replace the LCD panel "again."
I will be honest I started looking at other TV's beside Samsungs but my eyes still drift towards Samsung sets.
post #12300 of 12492
Quote:
Originally Posted by tkcc123 View Post

One more thing... I now have a better understanding of why the back-firing woofers in this set sound kind of lame! With the cabinet removed, I could see that each is barely 2-1/2 or 3-inches in diameter and each is mounted in a small plastic resonant enclosure (given all the open space surrounding each of the enclosures you'd think they could have designed something better).

tkccc123: Regarding your Subwoofer sound:

You did not mention your firmware, but you mentioned your set was manufactured in July 2008. That was before Sammy started shipping with the 1010.2 firmware.

If you have older firmware, you will be able to get much better sound out of the woofers by updating. The older firmware had a bug where bass from the right channel was not piped to the woofers. I'm not saying the bass sound from the woofer is great, but it is certainly WAY better if you have a newer firmware.

Details on subwoofer balance issue are here.

My post on firmware history is here.

There was a good post somewhere about fixing up the audio, but I cant find it. One is here and also lots of more detailed ideas in the settings thread..
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