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Lg flatron tv M2762DL

When turn on after 2 minutes it starts to make a noise ( like an electric current) and the screen goes off but the sound stays on

Posted by Anonymous on

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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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  • 6 Answers

SOURCE: I have a LG 42LB1DR

I purchased four 2200uf @ 25v capacitor’s for $8 at a repair shop. I upgraded to 25v because these will run cooler. The tv came with 2200uf @ 10v Samxon caps that seem to be problematic in all the units they were used in. Do not buy Samxon if you do this job yourself.... I opened the set by taking off the plastic back panel and then by removing the second metal panel. There are three boards and a hard drive. The board on the far left just above where the plug goes in is the power supply board. There are five data cables and one red power cable attached to it that can be removed simply by unplugging them. The board is fastened to the unit with five small screws, one on each corner and one in the middle of the right side. If you look for three green capacitors grouped together around the middle of the board and slightly off to the right, you will probably see one that is bulging out at the top. This is most likely "C235", the main problem. The other three caps that need replacing are C202, C201 and C219. C219 is closer to the top part of the board.....
The process to replace is simple, believe it or not, and it could save you hundreds of dollars. 1, Go to RadioShack and buy a cheap soldering iron and a small roll of solder. 2, Buy four, 2200uf @ 25v capacitors, online or at an electronics store. 3, Plug the soldering iron in and let it heat up. 4, Locate C235 on the back side of the board and mark the negative terminal with a felt tip marker (you want to make sure that you put the negative terminal on the capacitor through the right hole, otherwise you will pop the cap. The negative terminal is clearly marker on all the capacitors). 5, With needle nose pliers, grip the cap and pull down while heating up the terminals. The cap will eventually come out. 6, Put the new cap in (you may need to heat the solder that is left on the board to clear the hole so it can push through). 6, When both terminals are through, bend them slightly so it stays in place. Take the solder and stretch out a few inches off the roll and while holding it in one hand, lightly touch the base of the terminal where it comes through the board, with the soldering iron and the solder at the same time. --- Try not to use too much solder.. you only need a tiny drop. This will solder the cap in place. 7, cut off the terminals close to the board with some snips and repeat this on the other three. 8, put the board back in, plug in the cables. Test the TV before putting the back panels on. It should work fine if all went well..... If you hear a pop than you reversed the terminals on a capacitor and that one will need to be redone correctly.... This might sound lengthy and potentially difficult but its worth a try. Otherwise you can pay someone to replace the entire board for BIG BUCKS with the same junk caps on it and have the same problem in a year or so. LG doesn’t want to take responsibility for this and I'm sure that it has cost a lot of people a lot of money for about $8 in parts........... This worked for me and it can work for anybody with the same problem.. Good Luck!

Posted on Apr 28, 2009

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stergiou88
  • 66 Answers

SOURCE: TV loses picture about 2 seconds after turning on

check the oscillator

Posted on Oct 24, 2009

  • 148 Answers

SOURCE: After turning on tv screen stays up for 1 minute

Hi there, first off, place a fan as close to the back of the tv as you can, this could prolong the use of your tv by cooling down the powerboard inside, The reason why your tv is doing this is becouse the caps (capacitors) in the powerboard are going out. This is a very common problem in all class and price ranges of modern lcd and plasma tv's/ monitor's. I don't know if this problem has been like this for awhile or it just started, but either way, if the tv takes an abnormal amount of time to "warm" up then it most likely will go out all the way sometime in the (near) future. If you have a tiny bit of will and knowledge ypou can open the unit and get to the print board. Examine this for "popped" capacitors, they will have a buldging top instead of a flat one. Im gonna try to include a pic of them here, if i can get it this time, I've tried bfore lol. But you can google image a "popped" or "bad" capacitor and you would be able, with ease, to diagnose if you have any of these. Usually only one or two. Radioshack sells capacitors (couple anyway) for $1.59 each. MAKE SURE the replacement is of the SAME voltage or HIGHER, or you will be right back replacing those 2. Every capacitor has a negative pole marked with an (-) on the side of the capacitor(by one of the "legs", always puit the negative (-) "leg" of the new capacitor in the same hole in the printboard as where the previous negative (-) "leg" of the capacitor was ( a capacitor with the negative and positive "legs" put in backwards will result in the new piece "popping" as sson as you turn it on!!) make sure the "uf" rating (for example the most common popped capacitor is the 1000 uf) is the same as the one you are replacing. I needed 1000 uf, 105 c and 26v (volt) ratings for the 1 capacitor I needed to replace to fix my LG 19" lcd panel monitor I found by the trash that the light came on off, but it didn't come on. I replaced that capacitor with ; 1000uf, 85 c and 36 v (volts0...It works fine eventhough the volts and the temperature rating (36v and 85c) was not the same as the (26v(volt) and 105c ) capacitor I removed !! Further, I've replaced capacitors that had the celcius rating of 105 with the only ones Radioshack had, namely 85 c(celsius) they have been working great, but I'm not sure about any effect, nor have I heard or read (yet?) about that making an urgent difference. Many threads that I've read people have done the same, so we should be ok (my stuff has been running good for a while longer then most brand new ones!.............(all these ratings ; 'uf ' and 'c' etc are on the side of the capacitor you are replacing and on the side of the ones you are replacing them with)...For all this all you need is the cheapest solder gun u can find (I bought one for $7.99 at Radioshack), a camera (to take pictures as you go to remember how to reassemble the unit) and, once you have your materials, 20 minutes to replace 2 or 3 capacitors and you are good to go...Most monitors and tvs (lcd/plasma) I've seen you have to lay flat on the ground/bed/blanket etc, to work on (screen side down). Usually there are 2 or 3 screws (or a few more) to remove, then you will have to carefully (its comes off easily most times)insert a flat screwdriver inbetween the casing and gently pry it up as you go around the whole frame. Sometimes you have to remove the little washer arouind the cable input orso, just be gentle and you cant go wrong. Once insidet here will be a box with wires running to the sides etc...unplug, gently, these wires and open the box. Inside you will find 2 or 3 circuitboards, check them all for "popped" capacitors, replace, reassemble and plug it in....Have fun becoming an overnight tv mechanic lol! If this helped you (or not) then please rate, thankl you!05f6799.jpg

Posted on Feb 05, 2010

  • 4234 Answers

SOURCE: Sound stays on, but no picture- goes black and stays that way.

This unit should still be under warranty and should be taken in for warranty service. Any attempt to access the interior will void the warranty. It is important that a complete description of the problem like you entered here be taken along when you bring the set in for service. This will insure that the servicer be able to reproduce the problem and resolve it.

From your description (and as a servicer), I would be looking for a component that is heat sensitive. These types of problems are fairly easy to locate and resolve.

Please take this in for warranty service and update this when you find out the details.

Thanks,
Dan

Posted on May 04, 2010

joedirty
  • 158 Answers

SOURCE: I have an AVOL ALT3213M TV 32

Yes, I had the same problem and it was the invertor board that controls the lamps .I bet ya that's your problem.Hard to locate parts for these lcd's.If you find a supplier please post.Have fun locating parts. It took me 2 weeks to locate one.

Posted on Jun 19, 2010

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My LG tv model number M2762DL will not show a picture. On the screen shows a code V3.14.0. What is the problem?


Somehow, you have gotten to a firmware information screen. Try pressing OK and Exit simultaneously on the LG remote. (Note: this doesn't work if you use a generic or other universal remote.) If you don't have the remote, you can try pressing Menu and OK on the TV. (These are the second and third buttons from the left.) I've only seen the remote method work.

If that works, you'll probably need to open the input list and change the current input. Press Input on the remote or on the TV (the leftmost button).

I hope this helps.

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When i turn on the lg lcd tv in the morning or for the first time that day the picture and sound work for a few minutes then picture plus back light go off leavin the sound working and ablack screen. The...


I have exactly the same problem with the same model tv. I am currently scouring the internet to try and find a solution to fix this problem. If you find one before I do, please share your findings and I will do the same. It has been suggested that it could be capacitor failures in the power supply unit. I have not looked at the psu yet to see if any capacitors are "bulging" I want to be sure before I start changing components.

Nov 11, 2010 | LG 42LC2D 42 in. LCD HDTV

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47LG70 - PICTURE WENT OUT. STILL HAVE SOUND. HEARD A POPPING NOISE WHEN PICTURE WENT. TV IS ONLY 1 1/2 YEARS OLD. ANY IDEAS WHAT MAY OF HAPPENED.


I have had the same problem off and on with my 47LG70 for months. When the "popping" noise happens, the blue light in the corner stays on, so I know the tv is still on (sometimes I still have sound, sometimes I don't). Sometimes the screen goes black, but other times it is blue. If I turn the tv off then on again, it might stay on for seconds, minutes or hours. It's been very frustrating.

This seemed to happen right after I got my new Comcast box, which came with an HDMI 1.3 cable. I read somewhere online that this tv might not be compatible with that cable, so I unplugged it and am using component cables again. I just did this today, so I don't know if it will work, but so far the tv has been on for 30 minutes with no problems.

I'm pretty ignorant about HDMI compared to component cables. I imagine I will not get as good a picture with the component cables, but I am willing to sacrifice quality if I can just get the darn thing to work. Mine is also only 18 months old.

Hope this helps. If it doesn't, maybe someone else out there can help us both.

Sep 21, 2010 | LG 47LG70 42 in. LCD TV

1 Answer

The screen blanks out after approximately 20 minutes.


The power supply board is dead.Those high voltage transformers on the power supply board,one those power coil have a short in it,that why it cause this shutdown a have a loud electrical current noises.Tries websites like Shopjimmy.com.Ebay.com to buy a new refurbish power supply board for the replacement,should solved this loud electrical noises shutdown to tv.

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Hi, I have an LG Flatron TV which I bought 6 years ago. Good picture, no problems until now. I put the set on standby via the remote. Later, when I put it on via the remote all I got was sound and no...


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