We were away for a couple of days and when we returned we found the unit had no power. None of the LED's light up (no picture or sound), we tried a different power source with no luck. The unit is about a year old.
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Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electronicshelponline.blogspot.com/.
Some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement.
Tv it is having a problems,it is developing a power surges to their eclectronic boards.If this tv have this problems like 2 or 3 times black out in a couple hours of tv watching?Yes.This is a brand new tv?Yes,it should be return to the place where it was bought right away to exchange it for another tv,because this problems,will develope in to a bigger problems.The tv Tuner signal board,will evenually will dies completey.After tv life in usage for awhile more.Ur tv evenually get power only, indication LED power light up only,but no tv incomming broadcasting picture to tv at all.
The television is shutting itself off to protect itself. The blinking light is a code pattern. The specific code determines whether or not you need an LCD Controller Unit, Main Board, power supply or something else. You would need the service manual. There are parts distributors you can get it from and the parts as well. If soldering and tv repair is not something you are entirely familiar you may want to seek a tv repair person. The manufacturer's support may walk you through the service menus to complete a factory reset depending upon the symptoms.
My conclusion: A modern TV breaking down within such a short span of time indicates one thing: It is an inferior product. I have made a mental note of the Sylvania product in order to not ever buy that brand again. If I am asked, I will be glad to share my experience with that name brand.
Problem: Samsung LTM1755B with only a blinking yellow LED when you try to turn it
Solution: I just had one of these come in. I opened it up, and found
the U501 capacitor a little suspicious looking, in that it had a
deformed top. It was a 470uF 16V electrolytic 105degC 10mm x 12mm. I
replaced it with a very good quality 1000uF 16V electrolytic 105degC
10mm x 16mm Nichicon UHN1C102MPD. After that repair, when I tried to
turn it on, the LED was yellow for a second, then green, then I got a
picture, and it appeared to work great. I then asked the owner a week
later how it was working, and they said it was working just like new!