Καμένα Led σε LG

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Elric666

New member
4 April 2016
3
Καλήμερα, Έχω μια LG 47LA6031 του 2013, στην οποία χθες έσβησε η οθόνη και εχω μόνο ηχο. Το σέρβις μου ειπε ότι μαλλον κάηκε ο οπίσθιος φωτισμός.
Το κόστος επισκευής ειναι 210 . Αξιζει τον κόπο 'ή να κοιτάξω για καινούργια?
Στο μεταξυ το θεμα με τον οπίσθιο φωτισμο ειναι μάστιγα. Δηλαδή πρέπει να αγοράζουμε τηλεόραση γνωρίζοντας ότι στην πενταετία - εξαετία θα τρέχουμε για αλλαγή led???
 

tamo

New member
27 April 2011
16
Καλήμερα, Έχω μια LG 47LA6031 του 2013, στην οποία χθες έσβησε η οθόνη και εχω μόνο ηχο. Το σέρβις μου ειπε ότι μαλλον κάηκε ο οπίσθιος φωτισμός.
Το κόστος επισκευής ειναι 210 . Αξιζει τον κόπο 'ή να κοιτάξω για καινούργια?
Στο μεταξυ το θεμα με τον οπίσθιο φωτισμο ειναι μάστιγα. Δηλαδή πρέπει να αγοράζουμε τηλεόραση γνωρίζοντας ότι στην πενταετία - εξαετία θα τρέχουμε για αλλαγή led???
καλησπερα , πανε σε ενα ηλεκτρονικο τεχνικο οχι στην αντιπροσοπια θα κοστιζουν τα μισα λευτα
 

john gabriel

AVClub Enthusiast
στην δικια μου 42 που ειχα το ιδιο προβλημα αλλα ειχαν καει ολα τα led εδωσα 95 ευρω ! κανε μια προσπαθεια και πηγαινε σε ενα τοπικο τεχνικο θα σου παρει πιο λιγα απο την αντιπροσωπεια αγοραζει ετοιμες τις λαμπες και τις τοποθετει !!! τα led ειναι πανω σε βεργες και μπαινουν ακριβως στην θεση τους !!!! απο τι μου ειπε ο τεχνικος θελει προσοχη με τις ωρες λειτουργιας της τηλεορασης η δικια μου επαιζε περιπου 18 ωρες καθε μερα με αποτελεσμα στην τριετια να καουν τα led (λογικο)!!!:2thumb22sup:
 

papasouzakias

Moderator
Staff member
13 May 2009
4,523
Διάβασα ένα πολύ εύστοχο σχόλιο σε βίντεο στο youtube για το γεγονός πως η διάταξη LED είναι πολύ πιο επιρρεπής στις βλάβες από ότι η διάταξη CCFL που υπήρχε στις τηλεοράσεις μέχρι το 2012.


Thank you so much for this. I have been telling people that LEDs fail at a higher rate than most realize for a while. Every time somebody talks OLED, there are people who instantly jump in and scream "BUT BURN IN!" as if it is a reflex.

My response has been basically like what you said here. LEDs have several components. You have the LCD screen and then backlights. Either one of these can fail. And LEDs fail A LOT. LEDs are very sensitive to Voltage and the heat that Voltage produces.

Let me give you guys an easy example. Go to any place that sells light bulbs and look at the 100W or higher LED bulbs. If you take a look at them, you will notice that they have heat sinks on them. Not only that, but please read the fine print...many LEDs will say something like "Not for enclosed light fixtures". Now stop to think people. Why does it say that? This goes back to the heat. An enclosed fixture means that the LEDs would not get air to circulate and cool them down, and that can cause them to fail.

Now when you consider this, look at your LED TV. They take these things and crank the brightness up so they can claim these high nit values, and the panel assembly is largely enclosed. What do you expect?

The LEDs can get hot, they crack, and that causes them to fail. And boom, you can no backlight.

OLEDs do not have backlights, thus they have one less point of failure, which is exactly how they top this list. And each pixel doesn't put out the kind of light that causes them to get too hot and fail. At least not normally. Sometimes you do have pixels that die. But not at the kinds of rates that LEDs do.

LED TVs that have local dimming introduce yet another point of failure, they have additional boards just for controlling these lights. Some Samsungs have 2 different LED controller boards in them, with dozens of ribbon cables connecting to each section of LED. And any one of these can be its own failure point. However, its usually the LEDs themselves that fail.

And now we have the Consumer Reports data to back that up. This data was for 3 years of models if I heard correctly. The reason they rank the new models high is because the past year's models have proven themselves, so they use that data to project how the new models of those lines will do. Its not just "Oh hey this model is new and has no complaints yet". That is not how this works.

The mid and low range models are a real crap shoot. If you aren't going to spend over $1000 on a TV, I honestly can't recommend ANY particular brand. They all are cutting costs so much, and are producing such cheap products that they all fail for any sort of reason. Seriously, the build quality of TVs today has dropped a lot in just the past couple years. They just don't care. The Chinese TVs have all sorts of really stupid software issues. They are so buggy. My recommendation is if you want it to last, buy that extended warranty! That is the way to guarantee it will last.

The LCDs that had CFL lights were built much better. Even older LEDs were built better than today. So you can't compare them to the models that are releasing now. Even the top end models have cost cutting measures. Think about this, Samsung doesn't use screws! There is not a single screw in most Samsungs today. You have to pry them apart, and even the circuit boards are not held down with screws! They have little metal tabs that slide into place. All so they don't have to pay somebody to screw them together. That costs too much, LOL. Even the stands on many models don't use screws now. They just slide in. The reason why TVs all have legs on the sides is that they use less material to produce, and they weigh less. Since they weigh less, it costs less to ship, too. They cut corners everywhere