Question about Samsung Syncmaster 730B 17" Flat Panel LCD Monitor

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Backlight How? I don't have a print to now how to dismantle! Are there bulbs or a LED strip?

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My freind you need a technician for that

Posted on Mar 12, 2008

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6ya6ya
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Posted on Jan 02, 2017

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I have a Samsung 40" LED tv that has sound but no picture. You can see an image if you shine a flashlight on the screen. I see no backlights when I take off the back.


Hi!

Check the backlight circuit, but first, check the power supply of the blacklight circuit, does it feed the backlight circuit or not. If not, it's the power supply circuit, if yes, check the backlight circuit itself, and if it works, check the backlight themselves, the led. Good luck,


Serge.

Nov 01, 2016 | Samsung Televison & Video

1 Answer

Backlight for tv


One or more of the LED backlight strips behind the LCD have failed. Difficult and sometimes expensive to fix.

Jul 08, 2016 | Vizio E550i-B2 55" LED TV 1920x1080, 120...

1 Answer

Vizio Customer Service said that I have a Partial backlight failure and unrepairable. My question is how do I repair this?


Hi Chad,
Partial backlight failure in LED TVs means some of the LED bulbs in the backlight array have gone bad. It is repairable by replacing the bad strip. Some times when the strip is not available, the defective LED alone can be replaced. But, the job is risky, and delicate. There are chances of damaging the panel if you are not in practice of doing it regularly. Your set being 55" means you have to be extra careful while doing this.
Good luck.

May 26, 2016 | Vizio Televison & Video

1 Answer

How do i test a backlight for a led tv


Testing TV Backlight LEDs - YouTube

? 4:44
https://www.youtube.com/watch?v=eEJoPCa7Kt0
Jan 24, 2015 - Uploaded by swappart.com
... explaining easy way to test individual LEDs on a strip from aTV backlight. ... Sharp LC-60LE820UN TV - LED Strip Testing - Long Version ...

IT02 - How to Test LED Backlight - YouTube

? 0:55
https://www.youtube.com/watch?v=YmSI2N6BGPA
May 20, 2011 - Uploaded by LCDPARTS
How to use IT02 to test Laptop screen LED backlight.

LST04-TV, How to test LED TV screen - YouTube





Dec 26, 2015 | LG Televison & Video

4 Answers

Lg 47ln5400 picture went black. Still have sound and can see menu screen when using flashlight. Backlight blinks at power up then turns off. Which board is the problem?


I had the same problem with my LG 47ln540v led tv.I combed all the tv forums for answers and most suggested replacing psu board or the main board or talked about bad capacitors or resistors or transistors.Not being a technician I decided to replace all the boards including the t-con board and still the same fault remained.I spent about 5 weeks trying to troubleshoot this fault and eventually decided to strip the tv screen assembly apart and I wired up the led strips individually with a battery and found one of the leds was faulty .It would appear that if the part of the circuitry that monitors the led functions detects a fault it immediately shuts down the power supply to them,ie,enters a safe mode.I found a tv repair shop that was willing to sell me a replacement led strip from a used tv and this has solved the problem.As I have said, although I am not a tv technician I know enough about electricity to feel confident poking around inside a tv but for anybody else I cannot recommend this solution as messing around inside a tv is dangerous even when switched off.Some of the capacitors on the power supply board can store a high voltage and charge and could be lethal.I hope this helps.

Mar 04, 2015 | LG Televison & Video

1 Answer

Screen is black


This website sells both replacement CCFL backlights and upgrate LED replacement backlights.

update ccfl lcd to led lcd led strip led backlight led kit led backlight...

Dec 04, 2013 | Northstar Explorer 657...

1 Answer

I need a replacement screen and i'm not sure which cffl/backlight to order


Here are the eBay search results for your exact system model -

http://www.ebay.com/sch/i.html?_trksid=p5197.m570.l1313&_nkw=Toshiba+Satellite+L355D-S7809+screen&_sacat=0

Sep 20, 2012 | Toshiba Satellite L355D-S7809 NoteBook AMD...

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