From my research: Turn down the backlight if you want to prolong the life of you TV. If the top of the set feels hot, it is probably not doing the set any good.

We have a 50" Toshiba LED TV less than 3 years old, did not purchase extended warranty as usual with electronics. Three weeks ago, screen went dark, sound still on... can change channels, volume. Can see a faint image in a dark room with a flashlight. I knew immediately it was either burned out backlight LED's or power supply board. Did some googling and was not able to find a schematic/ service manual. Toshiba was no help since it is out of warranty. Found the LED's for this particular set is not available anywhere. Found a power supply board for $65 in Hong Kong, nothing closer. Didn't order the power supply since I am not sure if the LED's are ok or not. If not, no use buying power supply board. Opened up the set which was a pain. Bezel and back cover is snapped together with opposing snaps that is not intuitive to unfasten.

Poked around with an ohm meter in the power supply board and found 3 components shorted out (2 Schottky diodes and 1 Mosfet). Got the faint p/n's (thank God they were legible) and ordered equivalents (exact p/n not available) with higher ratings from China. Parts arrived in 2 weeks, not bad less than $10 for 3 Mosfets 10 diodes. Put the parts in and got a bright screen!. Set works again!

I was very surprised the TV burned out so early, our first big screen LED TV purchase.

Go into settings/ backlight and turn it down as far down as you can and still see a good picture so that your set may live longer.

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85 300D turbo pristine w 157k when purchased 161K now
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked

good job,I wonder if power supply are note book sized.I buy them used at flea market some times.

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1999 w140, quit voting to old, and to old to fight, a god damned veteran

No idea where a suitable power supply could be found

The good news is that replacement 50" TVs are available from about $250 or less at some sales.

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Toyota is a leader only because their drivers block everyone behind them. Oh what a feeling.

I haven't cracked open a led tv but a few years back my buddies plasma tv crapped out. Shop quoted him 450$ to replace the power supply. I opened it up and nothing jumped out at me but in an ocean of tiny components one capacitor seemed a little bulged. I swapped it out for one in my collection, slightly higher rated, on a long shot. Been working ever since.

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90 300TE 4-M
Turbo 103, T3/T04E 50 trim
T04B cover .60 AR
Stage 3 turbine .63 AR
A2W I/C, 40 LB/HR
MS2E, 60-2 Direct Coil Control
3" Exh, AEM W/B O2
Underdrive Alt. and P/S Pulleys,
Vented Rear Discs, .034 Booster.
3.07 diffs 1st Gear Start

90 300CE 104.980
Milled & ported head, 10.3:1 compression
197° intake cam w/20° advancer
Tuned CIS ECU
4° ignition advance
PCS TCM2000, built 722.6
600W networked suction fan
Sportline sway bars
V8 rear subframe, Quaife ATB 3.06 diff

From the posts it pays to at least have a look apparently if you have some electronic knowledge.

Personally I like our Samsung led smart television. It runs cool and takes far less energy to run than many plasma sets.

I had an old computer I was tossing and you are supposed to take them to a recycler for disposal. I went to the local free disposal place and was quite surprised by all the electronics that were dropped off, in particular were brandy new looking big screen tv's, lcd/led types. I asked the guy what was up with that and he told me they get many only a year or so old and they get tossed due to the cost of repair vs cost of a new one.

They had bins full of tv's that looked like they came right off the floor.

I have a couple Sony triton 27 tv's and had one repaired and that fellow had shelves full of those lcd/led types and told me most were cheaply made and lasted a year.

I'll stick with my old fashioned 27 for now.

Some months ago I was up north and visited a guy who is very tech savvy. He is a pretty well known video game designer, a free lancer, who keeps up with the hardware because he is constantly rewriting code for older games.

He asked me if I had gone to a 4K 3-D set yet and I said no, I was just limping along with my old 1080i. Then he told me to not worry about the newer sets lasting only a few years. I asked him, "Why?"

Because technology is changing so fast that three years from now you will want to buy a new set anyway. So why should you care if your set only last three years?

OK, maybe he has a point. The thing his his thinking reflects the thinking of the makers and designers of these sets. He works with these people and had picked up this attitude from them.

But I'm old. I grew up with color TV's costing two months pay and lasting for twenty years. I guess I should not gripe since today I can buy a TV that runs rings around that old 25 inch screen for less money I pull down in two days.

But I still do.

I had my LG tv go out on me after a few years (bought it top of the line about 4 years ago, still pretty good today after the following fix). My issue was that it would get stuck on the introduction screen (logo when you turn it on). Turns out there's a common solder joint that fails. Popped the main board in the oven at 385*F for 20 mins and works like new. I've had to do it 3 times now but works like a charm. I've since replaced it as my main tv with a projector which is way way way more for the money. For what it's worth attached pic is a $400 projector with all the windows and glass door wide open, 120" screen.




Sent from an abacus

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TC
Current stable:
- 2004 Mazda RALLYWANKEL
- 2007 Saturn sky redline
- 2004 Explorer...under surgery.

Past: 135i, GTI, 300E, 300SD, 300SD, Stealth

TV? What's that?

(Actually, I do own one -- same 22" LED that I bought on Craigslist 8 years ago. LOL.)

Projectors once cost $3,500 for a run of the mill unit. Now that they have come down they are a real thing to look at.

And you never have to worry about a screen burning out.

I use one in my movie room which is about 10 foot across. I don't use it that much but it helps to understand how a project will be received in a theater.

The picture is great but it is hard for the eye to take in so much information when it is so spread out.

I have never had a TV burn out, probably because I don't watch much...they're used at most 2 hours a week.

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1963 Ford Falcon Convertible
1972 220D 4-speed
1986 190D 2.5 5-speed
1999 300D

The only time I've every had to replace a television was because of gravity or such. First television replaced was due to upstairs neighbor puncturing a waterbed, spilling the contents of a king sized full wave mattress though their floor and my ceiling. The second was because it was dropped when we moved from UT, and the third was because my son was acting the fool, and fell into my 40" Vizio. Insurance replaced the first, moving company replaced the second, and my son replaced the third.

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1987 560SL
85,000 miles

I treated myself to a Mexican-made Hisense 50" last year, on sale at HH Gregg for $329. It came with a 2-year factory warranty, so I declined the store's extra-cost extended coverage. After a year, the led backlighting started blacking out at random, or anytime I used the kitchen microwave. It always came back on if I turned the set off, then on again. I called Hisense.
FWIW, their 800 number is also for Sharp electronics products, so maybe Hisense and Sharp are now related somehow.
Hisense sent me a UPS shipping voucher and packing instructions. Fortunately I'd saved the original box and foam. So I packed it up for shipping to their customer service center in Swaunee, Georgia. They sent me back a brand-new 50" smart set' with a new two year warranty.
Biggest hassle was securely re-boxing the set, then shoehorning it in the back seat of my car to take to UPS. (Hisense paid for the shipping, but according to UPS, pickup at my house would've cost extra)
Then they failed to notify me when the set was coming back, so I was out of town when UPS attempted delivery about 8 times! I had to go pick it up at the UPS warehouse after 7:30 PM, and again stuff it in the back of my car.
The new set survived it all, is working fine, and I can use my microwave again!
I have an older 32" LCD set that has the same blackout problem and no warranty. Also, a friend gave me his dead 32" LG set. I may try to fix those myself, someday when I have too much time on my hands.

Happy Motoring, Mark

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DrDKW

Sharp sold their TV factory (Rosarita Beach, Baja) to Hisense a year or two ago. I visited that plant a few times. Very impressive very modern plant. They crank out an amazing number of TV's every month, all fully automated assembly. They used to make 80 inch whiteboards for our group, except those had to be hand made in a humongous clean room. Those might be automated as well by now.

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Palangi

2004 C240 Wagon 203.261 Baby Benz
2008 ML320 CDI Highway Cruiser
2006 Toyota Prius, Saving the Planet @ 48 mpg
2000 F-150, Destroying the Planet @ 20 mpg



TRUMP .......... WHITEHOUSE
HILLARY .........JAILHOUSE
BERNIE .......... NUTHOUSE
0BAMA .......... OUTHOUSE

I got my first Hisense, a 32" LCD set, four years ago. At the time I looked them up and found out they were a Chinese company that started making televisions in 1971, but were primarily sold in the far east and Austrailia until they came to the US around 2010.
For an off-brand, they at least have a better rep than 'Coby', which had a bunch of TVs actually catch fire, then folded, leaving their retailers to compensate the unhappy buyers. At least for me, Hisense has stood by their warranty. We'll see how well this new one holds up.
As for their ties to Sharp, Hisense purchased Sharp's Mexican plant in July 2015, for $23.7 million. This also included the rights to use the Sharp name in North and South America, except Brazil.

Happy Motoring, Mark

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DrDKW