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My changhong ruba 50" smart LED tv giving horizontal strips. Although sound in back ground is ok. channels get change through remote but strip remain on screen. no picture on screen.

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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techman
  • 3130 Answers

SOURCE: Proscan PS35123-horizontal line only,sound ok

You have whats called a verticle swep falure. Its probably just the verticle output IC but if you dont know much about soldering or circuit troubleshooting ,you should leave this to the pros. Theres way to much Hi voltage inside these sets to twiddle around inside them. Also there are no consumer serviceable parts inside these sets as well, as they are all solid state, and my advice is spend a few bucks and get a pro to do this job for ya, as it can, and will, kill ya if your not careful.. Is it worth saving a few bucks??? Naawww Call a pro.. Good Luck

Posted on Jun 13, 2006

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ttech
  • 139 Answers

SOURCE: the picture on my tv is fuzzy

Check your connections Inm the Back of your Tv and Also see If your VCR got turned on By Mistake....

Posted on Jul 19, 2007

  • 28 Answers

SOURCE: tv picture

Hi

Most likely reason, Picture tube.

Capital98

Posted on Dec 21, 2007

  • 1 Answer

SOURCE: no picture but sound is ok

my dreamcast console has sound but no video, it will go to the time setting scream but no responding after that point

Posted on Jan 22, 2009

SOURCE: samsung 50" plasma tv with no picture but has sound.

I just had a similar issue with my 46" Samsung LCD and fixed it myself for $5.11! I realize we have different tvs, but I bet it is the same issue ... crapped out capacitors.

I researched the problem online and most places, like samsung's site, referred me to call a repairman and called for the whole control panel or power supply to be replaced for anywhere between $400-$1000. I was like ... "screw that" ... I refuse to put in a fautly part in the place of a faulty part. So I continued to research.

That's when I stumbled on youtube. There are many how to videos on how to tackle this daunting task. I read that the issue was more than likely faulty capacitors and there is a very easy way to tell if it is in fact the capacitors that are blown. instead of having a flat top, faulty capacitors are crowned or even ruptured! When I opened up my TV I saw 3 blown capacitors!

So I bought 3 new capacitors all with the same uf and higher volts ... I think all three of my capacitors were 1000 uf and 25 volts. I kept the uf the same (recommended) and raised the voltage to 35 volts. It doesn't mean more volts, it just means it COULD handle more volts if it had to (which was the problem those cheap Samsung bastards screwed up on). This is a very common problem with Samsung TVs.

Anyway, I have never soldered before, but I did it. I warmed up the solder on the bad capacitors and removed them them slid thenew ones in and soldered them in and popped everything back together ... and PRESTO .... the damn thing works better than ever!

3 capacitors= $5.11
1 solder gun and solder= about $18
fixing an incredibly intimidating TV by yourself= PRICELESS!


Seriously ... don't be afraid to F up ... check it out on youtube and other place and save yourself a bundle. Source(s): I just fixed my TV!!!!!!!!

Posted on Mar 17, 2011

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1 Answer

How do I know which type LED diode my LG smart LED TV 50LB6300 uses on the backlight strips. Some are faulty.Need to replace. On the power boards it is written LOW 113V - 215mA and High 170V-215 mA


Unless you can either find the engineer who designed the TV or find someone who has already figured this out by trial and error, you are on your own to find an answer to this. I work on copiers, back in the 90's they included a pretty detailed schematic with the service manual which allowed you to figure out what other part to replace when transistor Q7 on board X burned up. That is no longer in the manual and even the people on the factory tech assistance hotline have no idea what part on the boards controls the other parts in the machine. Quite annoying at times!

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I Have a ViZIO smart TV Model # E420i-Ao Ser# LAQKNRBP0500931 has sound but no picture No light show up in the back and can see any thing on the screen with flash kite when you push channel or menu


It is a common problem for Vizio TV uses a LG 42" & 47" display panel.
The problem is defective back light LED strips, you have to open the entire panel & find the defective strips (it marked as L1, L2 (left), R1, R2 (Right)), the part number usually marked as 6916L-XXXXX.
Both Vizio & LG will not sell the strips, you have to find them on EBay for new or used one.

Jun 01, 2017 | Vizio Televison & Video

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If I replace the LED driver, do I also need to replace the back light strips?


Hello, those sets are notorious for the LED strips failing. I have replaced dozens of them. If your going to replace them, be sure you replace them all! Pat # is LC420DUE-SFR1 LED Strips. Thanks

Apr 27, 2017 | LG Televison & Video

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LG 32LN5300 LED TV that suddenly went to Black Screen no sound. Should I change out all three strips of LEDs?


This sounds more like a power supply problem than a problem with the backlighting, plus the lack of sound also would indicate something other than problems with the backlighting.

Oct 02, 2016 | LG 32LN5300 32" LED TV 1920x1080, 60 Hz,...

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LG 55LN5710 Smart TV Panel number LN54M550060V12


its normally an inverter fault that stops back light or the caps have failed also common problem

Apr 17, 2016 | Televison & Video

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TV Problem: No Video but Audio works


Here are some basic treatment for a dark display.
  1. On LCD TV, Some time missing or lose LCD strip from PCB connector. Solution- Clean strip and connector.
  2. Some time missing LAMP, burning lamp is a major cause for dark display in LCD TV. If lamp problem with any display, Display show in sun lights. Solution- Check Lamp connection/connector. Clean connector or change Lamp.
  3. In CRT TV, Fly back is faulted. There are no high voltages. Solution- Change or check fly back, Check out put transistor.
  4. Some OLED Tv Use OLED lights for display shining and brightness. IF LED's or lamps are faulted there is no display in sun shine.
  5. Before starting Troubleshoot display problem you need to conform and trace faulted stage of TV.
  6. Don't Apply any miss use trick at home. Contact the professional repairing lab.
  7. If you are full fault to understand your TV problem. Tip more condition of your problem.

Jul 02, 2015 | Element Televison & Video

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