17 month-old Sharp LED TV is broken - Blu-ray Forum

rarredoa · 12-15-2014, 05:10 PM

I have a 40" Sharp LC-40LE550U that I bought from Best Buy in July 2013. The TV has been working flawlessly until Saturday. The TV is past its warranty period.

The TV is on, but the display itself does not appear to show anything. I am not sure of how LED TV's work, but it seems like there is a "no input signal" message moving around the screen (like a screen-saver) when I get very close to the display. Maybe the TV is backlit and it's backlight is what went out?

Any ideas?

rarredoa · 12-21-2014, 12:36 AM

Quote:

Originally Posted by rarredoa

I have a 40" Sharp LC-40LE550U that I bought from Best Buy in July 2013. The TV has been working flawlessly until Saturday. The TV is past its warranty period.

The TV is on, but the display itself does not appear to show anything. I am not sure of how LED TV's work, but it seems like there is a "no input signal" message moving around the screen (like a screen-saver) when I get very close to the display. Maybe the TV is backlit and it's backlight is what went out?

Any ideas?

Anyone?

schan1269 · 12-21-2014, 06:53 AM

LED is the backlight.

LCD is the display tech. Sounds like the backlight died.

Katatonia · 12-21-2014, 07:20 AM

There isn't some kind of "Picture Off" button is there? My Sony has one on the remote, which just blanks the screen but leaves the TV on. I've accidentally hit it before...

The backlight probably died though. Looking at the Amazon reviews on your set, it looks like it has a higher than average failure rate. You didn't buy a Square Trade extended warranty or anything? A 4 or 5 year plan can be had pretty cheap.

DarkZelda · 12-21-2014, 09:21 PM

I would first check your input is for the correct source (ie HDMI1 , HDMI2, etc). If that doesn't correct it then check the hdmi cables, both from source to the display. They may have been nudged by dusting or the cables themselves may have gone south.

I occasionally receive the "no input signal" and the 2 above solutions correct it.

rarredoa · 12-31-2014, 10:18 PM

I started troubleshooting the TV. I removed the back panel just to take a peek at the layout of the components. Me be inexperienced in TV repair, I can't seem to locate the LED inverter. I will do some more research and eventually locate it.

However, I noticed that the faint bit of output from the TV's "no input detected" alert comes on only when using HDMI inputs. After noticing this, I connected an older DVD player via component video and the TV recognized the signal and I could see image of the disc playing but still with no backlight. Could it be that the main-board is the problem and not the LED backlight?

I hope a TV technician on this forum can point me in the right direction.

schan1269 · 01-01-2015, 03:27 AM

That must be one craptastic TV.

Google

40le550u backlight replacement

Forums littered everywhere...

Steel Panther · 01-01-2015, 05:44 AM

This is why I won't ever buy another Sharp TV again. my first HDTV was a Sharp, and it took 3 months for it to stop working properly. Anytime i lost power, the video board had to get reset. I bought the extended warranty, and they said I had to deal with Sharp for the first year.. (I know.. why pay for it when they wont do anything) .. so the day after a year passed, I called the store up and said okay, fix it or take it back... 2 weeks later, they called and said to bring it in, and they'll just give me a replacement.

Never ever again. will I get a Sharp.

schan1269 · 01-01-2015, 06:19 AM

One thing I didn't look. Is this 40le550u "Sharp branded" or an "Aquos"?.

Aquos are made by Sharp. And all of them say "Aquos".

If it says Sharp, and Aquos is nowhere...that means it is branded.

Which means...somebody else made it, like Funai or TCL.

Never buy Sharp branded.

Thomas Irwin · 01-01-2015, 07:52 AM

http://www.twice.com/news/tv/best-bu...rced-tvs/55021

Thomas Irwin · 01-01-2015, 08:02 AM

I'm not really sure exactly what you're seeing, but I had a seemingly similar experience with a 1-1/2 year old Insignia TV years back. In the middle of watching a film the screen went completely white, and that was that.

I later purchased a Samsung and no issues since - very reliable thus far.

supersix4 · 01-05-2015, 02:57 PM

Quote:

Originally Posted by schan1269

One thing I didn't look. Is this 40le550u "Sharp branded" or an "Aquos"?.

Aquos are made by Sharp. And all of them say "Aquos".

If it says Sharp, and Aquos is nowhere...that means it is branded.

Which means...somebody else made it, like Funai or TCL.

Never buy Sharp branded.

Probably why my LC-32GP1U from like 2007 is still going strong for the friend I gave it to. :P

12-15-2014, 05:10 PM	#1
rarredoa Active Member Member since:Apr 2007 Location:Los Angeles Home Theater Gallery:32 Trading Score:3	17 month-old Sharp LED TV is broken I have a 40" Sharp LC-40LE550U that I bought from Best Buy in July 2013. The TV has been working flawlessly until Saturday. The TV is past its warranty period. The TV is on, but the display itself does not appear to show anything. I am not sure of how LED TV's work, but it seems like there is a "no input signal" message moving around the screen (like a screen-saver) when I get very close to the display. Maybe the TV is backlit and it's backlight is what went out? Any ideas?

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12-21-2014, 06:53 AM	#3
schan1269 Blu-ray Guru Member since:Sep 2013 Location:Lake county, Indiana. Opposite end of Gary... Blu-ray reviews:2	LED is the backlight. LCD is the display tech. Sounds like the backlight died.

12-21-2014, 07:20 AM	#4
Katatonia Blu-ray Grand Duke Top contributor Member since:Nov 2010 Location:Missouri, USA 4K collection:928 Blu-ray collection:8247 DVD collection:3655 Digital collection:33 Prime collection:106 Blu-ray reviews: 30 Trading Score:156	There isn't some kind of "Picture Off" button is there? My Sony has one on the remote, which just blanks the screen but leaves the TV on. I've accidentally hit it before... The backlight probably died though. Looking at the Amazon reviews on your set, it looks like it has a higher than average failure rate. You didn't buy a Square Trade extended warranty or anything? A 4 or 5 year plan can be had pretty cheap.

12-21-2014, 09:21 PM	#5
DarkZelda Active Member Member since:Nov 2010 Location:Vancouver Island	I would first check your input is for the correct source (ie HDMI1 , HDMI2, etc). If that doesn't correct it then check the hdmi cables, both from source to the display. They may have been nudged by dusting or the cables themselves may have gone south. I occasionally receive the "no input signal" and the 2 above solutions correct it.

12-31-2014, 10:18 PM	#6
rarredoa Active Member Member since:Apr 2007 Location:Los Angeles Home Theater Gallery:32 Trading Score:3	I started troubleshooting the TV. I removed the back panel just to take a peek at the layout of the components. Me be inexperienced in TV repair, I can't seem to locate the LED inverter. I will do some more research and eventually locate it. However, I noticed that the faint bit of output from the TV's "no input detected" alert comes on only when using HDMI inputs. After noticing this, I connected an older DVD player via component video and the TV recognized the signal and I could see image of the disc playing but still with no backlight. Could it be that the main-board is the problem and not the LED backlight? I hope a TV technician on this forum can point me in the right direction.

01-01-2015, 03:27 AM	#7
schan1269 Blu-ray Guru Member since:Sep 2013 Location:Lake county, Indiana. Opposite end of Gary... Blu-ray reviews:2	That must be one craptastic TV. Google 40le550u backlight replacement Forums littered everywhere...

01-01-2015, 05:44 AM	#8
Steel Panther Blu-ray Ninja Top contributor Member since:Jun 2010 Location:Ontario, Canada 4K collection:62 Blu-ray collection:943 DVD collection:20 iTunes collection:341 Trading Score:21	This is why I won't ever buy another Sharp TV again. my first HDTV was a Sharp, and it took 3 months for it to stop working properly. Anytime i lost power, the video board had to get reset. I bought the extended warranty, and they said I had to deal with Sharp for the first year.. (I know.. why pay for it when they wont do anything) .. so the day after a year passed, I called the store up and said okay, fix it or take it back... 2 weeks later, they called and said to bring it in, and they'll just give me a replacement. Never ever again. will I get a Sharp.

01-01-2015, 06:19 AM	#9
schan1269 Blu-ray Guru Member since:Sep 2013 Location:Lake county, Indiana. Opposite end of Gary... Blu-ray reviews:2	One thing I didn't look. Is this 40le550u "Sharp branded" or an "Aquos"?. Aquos are made by Sharp. And all of them say "Aquos". If it says Sharp, and Aquos is nowhere...that means it is branded. Which means...somebody else made it, like Funai or TCL. Never buy Sharp branded.

01-01-2015, 07:52 AM	#10
Thomas Irwin Blu-ray Count Top contributor Member since:Feb 2013 4K collection:- Blu-ray collection:- DVD collection:- Trading Score:87	http://www.twice.com/news/tv/best-bu...rced-tvs/55021

01-01-2015, 08:02 AM	#11
Thomas Irwin Blu-ray Count Top contributor Member since:Feb 2013 4K collection:- Blu-ray collection:- DVD collection:- Trading Score:87	I'm not really sure exactly what you're seeing, but I had a seemingly similar experience with a 1-1/2 year old Insignia TV years back. In the middle of watching a film the screen went completely white, and that was that. I later purchased a Samsung and no issues since - very reliable thus far.

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