BIG FLAT SCREENS:longevity vs cost

[santu]

I have been planning to buy a 50 in since the last few months.So I have been reading the forum(TV threads)very carefully.Not everyone can spend 70-80k every 2 or 3 yrs.I think the number of bad panels are far too many than I expected.Plasma is my preference.

So can we have an exclusive thread for longevity, and defects in particular models?

I've closed in on UT50.

Please comment exclusively on longevity of flat panels-be it LCD or PLASMA.
Theoretical advice on longevity won't do.Please speak from experience or first-hand knowledge.

 

[Audiodoc]

Plasma are better at longevity. My 100k Samsung led panel got kaput after 2 years. There are similar stories for Sony, lg, sharp etc. All have similar problems, vertical or horizontal lines, or bands either due to a bad t-con board or connectors, especially those connecting the panel to the t-con.

 

[Rupam]

Lifespan of electronics is always a case of unpredictability. But you can always keep on safe side by using your TV properly.

Read here How Long do HDTV Plasma TV and LCD/LED TVs last? What's the Life Span?

Samsung plasma wins CNET's accidental burn-in test - Feature - TVs - CNET Asia

 

[rajatk]

I have been planning to buy a 50 in since the last few months.So I have been reading the forum(TV threads)very carefully.Not everyone can spend 70-80k every 2 or 3 yrs.I think the number of bad panels are far too many than I expected.Plasma is my preference.

So can we have an exclusive thread for longevity, and defects in particular models?

I've closed in on UT50.

Please comment exclusively on longevity of flat panels-be it LCD or PLASMA.
Theoretical advice on longevity won't do.Please speak from experience or first-hand knowledge.

Good thread.. i am closing in on 50UT50 as well..

 

[arindamcc]

CRT TV claim 20000 hrs of life span but they easily last 20 years. LCD TV claim 60000 hrs of life span but the real life time is 3 month to 5 yrs max (depend on your luck :sad: ) I think LCD technology is the worst display technology and most unreliable.

 

[kingfisher]

I have a philips DVD player bought in 2008. It could not play some DVD s showing wrong region. Philips service center in my town got it fixed in a day (though they charge Rs .250 ) and I feel their service is good. Also have 5 year old 21" Sony Trinitron which never got repaired still having good picture quality.

 

[kingfisher]

Previously we had a B/W TV (Solidaire Delta 10 model) and the picture quality and sound were incredibly good and loved it though it got repaired twice(that too because of our notorious TNEB power fluctuations SMPS went faulty). After 20 years, we replaced it with Sony only because we wanted color TV. Still it is in working condition.

 

[viper08]

If you go to any vintage / seconds goods shops, you will find countless CRTs aged between 15 to 25 years without any repairs and still giving good PQ.

Most of the people have dumped them because those CRTS failed to fail :lol: with modern thoguhts (such as larger screen and flat panels craze)

 

[haisaikat]

CRT s are 4:3 mostly but today's movies 21:9 or 16:9 hence it suits I think to switch to 16x9 TVs at least.

 

[just4kix]

I have purchased a 16:9 TV (Panasonic P50ST50). I hope that it lasts at least 10 years. But I am not confident.

 

[kingfisher]

HDTV Reliability and Satisfaction: LG is the Brand to Beat

But there are some brands though not much reliable , have better picture quality.

 

[Naveen_Reloaded]

If you go to any vintage / seconds goods shops, you will find countless CRTs aged between 15 to 25 years without any repairs and still giving good PQ.

Most of the people have dumped them because those CRTS failed to fail :lol: with modern thoguhts (such as larger screen and flat panels craze)

Still have few CRT in my home ( Aiwa 20" , Sony 28" , Sharp 20" ) Except for few issues , all are working fine . The LCD i got few years back from samsung developed black arc on the screen (dead pixles) .

As i saw in a documentary , the longevity is shrinking more due to the shrinking of the materials . My sony 28" CRT weighs atleast 10-20 times my Current 50" Plasma. So apart from the very nature of todays technology , we too need to be a little careful in handling newer devices , goes for all devices.

 

[ranojoy]

No issues with my 4 year old 42" plasma (see signature), touchwood.

 

[adder]

CRT TV claim 20000 hrs of life span but they easily last 20 years. LCD TV claim 60000 hrs of life span but the real life time is 3 month to 5 yrs max (depend on your luck :sad: ) I think LCD technology is the worst display technology and most unreliable.

Care to explain why,my lcd is more then 6 years old and other one is 5 years old and is still running as good as new.

CRT have more components,more heat is developed and inefficient.

While old crt where made with quality in mind,in todays world of cost cutting modern crts have just as bad life as any other flat panel tv.

 

[Audiodoc]

That is because you are a lucky fellow.

Also smaller panels usually tend to have lower rates of failure IMHO. I have two 22 inch LCD monitors with no dead pixels or problems. However my lone 46 inch led backlit LCD went kaput. Larger displays tend to feel the effects of panel expansion etc leading to loosening of the tab bonding between the panel and connector from t-con board.

Also the number of components are more in case of LCDs as compared to CRTs. It may appear smaller but that is because of use of more compact ICs and surface mount technology. CRT have a tube and a single PCB with the power supply, tuner, audio & video decoding and CRT driving circuits.

On the contrary LCDs have mostly three PCB. A power supply board, an input and Av decoding board and the t-con board. The modern LCD may appears slim but the number of components have increased many fold. You will read hundreds of complaints of failing components, mostly the electrolytic capacitors of the power supply board or the T-con board.

 

[santu]

Why am I getting the sense that at best a big panel is going to last 4-5 yrs?That too if u r lucky.

 

[adder]

That is because you are a lucky fellow.

Also smaller panels usually tend to have lower rates of failure IMHO. I have two 22 inch LCD monitors with no dead pixels or problems. However my lone 46 inch led backlit LCD went kaput. Larger displays tend to feel the effects of panel expansion etc leading to loosening of the tab bonding between the panel and connector from t-con board.

Also the number of components are more in case of LCDs as compared to CRTs. It may appear smaller but that is because of use of more compact ICs and surface mount technology. CRT have a tube and a single PCB with the power supply, tuner, audio & video decoding and CRT driving circuits.

On the contrary LCDs have mostly three PCB. A power supply board, an input and Av decoding board and the t-con board. The modern LCD may appears slim but the number of components have increased many fold. You will read hundreds of complaints of failing components, mostly the electrolytic capacitors of the power supply board or the T-con board.

When i bought my first camera phone the Nokia 7650 back in 03,it had a dead pixel and thats the only lcd screen that in any of my devices that had a dead pixel.

None of my two 32" lcds and a 46" lcd that i have had any dead pixels or any problems.Now modern tvs are not built like old tvs,todays tvs are built to cost and its quite evident.

If you look at the inside of HD crt tv like the Sony HS/XBR960 series you will find lots of boards including a power supply board,analog tuner board and quite a lot more.Unlike the old SD crt tvs which just had a analog RF tuner and analog input like composite/component,a HD flat panel tv needs to have all those plus a digital tuner and digital connections and so on.

If you thought lcd has more components wait till you use the number of boards in a plasma tv,hell they even have moving parts in the form of active cooling fans,to keep the the components cool,crank the brightness up in a plasma or watch some video with snow and you will see temperatures soring up and fans speed increased to their max.

 

[pkr]

@Adder, Not sure of the fans in Plasma. The service technician opened my 51D550 in front of me and there was just 3 boards (Y Buffer, Power and some 3rd board) and the panel. As far as I remember, there were no fans.

 

[adder]

Most plasma had cooling fans in them ,well the 2012 panasonic models still have them including the VT50 checkout the teardown pictures in fullhd.gr

 

[santu]

Proud owners of plasmas n lcds(bigger than 40 in) which lasted for more than 5 yrs,please come forward n declare urself so that prospective buyers cn get some encouragement.