Screen problem switching off LG flatron 19 inch repair

In this video I repair a LG Flatron 19 inch screen which works for a few seconds and then the backlights switch off (2 sec to black). I go through the disassembly, troubleshooting and repair steps. Note larger capacitors retain a charge even after mains are disconnected.

[@alwaysafix]

Thanks for the feedback. Yes, it's very easy to break a clip, or even the plastic bezel itself. My confidence comes from over 20 years of taking things apart.

[@apoorvasgala]

Thanks buddy. Your video helped me in opening and closing my monitor properly. Mine was similar problem. When I on/ off monitor around 15 times it would stay after that . It was tiering. After seeing your video I got courage to open my LG 19" monitor. Model W1942. I though had different finding. My monitor was having very much dust. So I cleaned it, then used my hair dryer to remove any moisture that might have accumulated. Then I reconnected all wires and started the monitor and bingo it showed the screen immediately. I had this problem year back also. But some how I had managed. We have monsoon season in Mumbai India right now and humidity is high. So it can be dust, humidity causing problem. This is my experience. I did it today. Let's see how it starts tomorrow. I'll update it later. Any way thanks for video.

[@malcolmgreen3086]

Thanks for another great repair video. You have no fear of the thin plastic! The hard part I have found is knowing where all the clips are hiding in the first place? .

[@rjskoko]

I just fixed one of these monitors. The symptom was that the blue power LED would flash on for a moment, then off for bit, then repeat. Capacitor C812 (Su'scon 1000 uF 10 V 105 deg C) was visibly puffy. I just soldered in a replacement and the monitor works fine. I find that a 2-inch plastic putty knife will help get some leverage without damaging the screen (and saving my fingernails). You can use two or three as shims to keep the case from popping back together. Thanks for the video.

[@markbeckitt1445]

Like your attitude to things that don't seem to work

[@gukonni]

Oh and what's invovled when soldering and insulating the ccfl? Want to add I have a different model lcd monitor which works in the first few seconds after turning it on but then it shuts off and STA"YS off. It doesn't come on repeatedly. I've oiled fans before but I've never replaced capacitors or worked with itnernals parts by soldering something. So this is all a big jump for me if I attempt. It's a huge help to find videos like this online.

[@z4jc205]

I tried the "american components russian components" technique.. It didn't work.. Then I tried your way, it worked. Cost me about $2 and a 6 miles walk to find the parts. I replaced all the capacitors, works like a charm. Hope it will last. Thanks mate, God bless ya.

[@alwaysafix]

Happy days and congratulations on your fix. This repair was done in 2013 and still in good working order. Thanks for watching.

[@davidlachmansingh4287]

Thank you for sharing this video because I'm having the same problem. I went out and bought another monitor but I should have explored this option first. I'm taking it to someone to fix but I will be showing the repair shop your video to demonstrate the issue that I'm having! Thanks again.

[@alwaysafix]

Glad to be of help and thanks for watching! Good luck with your repair.

[@ocayaro]

One good way to discharge a large cap holding under 1kV is to use the diode test mode of the meter. Make sure the mains is off, hold the probes to the cap one way or other until it displays about 0.5V. That way you avoid nasty sparks, shocks etc.

[@alwaysafix]

Thanks for sharing.

[@alwaysafix]

I've never damaged a ccfl lamp by handling it over the years, but you have to be very careful when working with the lcd panel, as that can get damaged very easily.

[@NilPassos]

Congratulations! It works here.

[@alwaysafix]

Well done on your fix. Thanks for watching!

[@buckmajor]

"Discharge the board" that would of been handy to know earlier lol. Now I know thanks :D

[@charliewilson3234]

I've got a Samsung xl2370 computer monitors 2 of them and they keep going off and on every now and them. Some times I have to keep the power chord disconnected for a few minutes and plug it back in and they come back on. Got any suggestions for this issues. Took them apart the boards visually look fine.

[@JOHN1987360]

same problem(blinking-goes off) on a lg l1730s, was an 680mf capacitor on powerboard who looked ok at first sight!!

[@alwaysafix]

JOHN1987360 Nice catch, I come across capacitors all the time that look perfect but are faulty. On a power supply where there are not too many capacitors anyway, it's easy to remove and test all. Thanks for watching.

[@KrisBendix]

Got a Flatron L194WS. Does the same thing. I guess I can just check the lamps right away then? Just have to manage to open it...

[@xGabz]

Thx man, you solved my problem.

[@Yurchuk666]

good videos!!! very helpful !

[@cynthiadesgagne8548]

My Flatron L1717S has a similar problem. The screen blacks out after barely a second, but sometimes (~ 1/100) it stays on. It even stayed on for 3 days in a row without issue, until I turned it off by mistake. I haven't open it yet, but would my problem be on the board instead of the backlights? Or something else entirely? (I'm not equipped to test the backlights.)

[@jamiesj]

Interesting video. I have the same monitor and the buttons on the front suddenly stopped working. Any ideas?

[@alwaysafix]

Just for testing purposes, if you connect for an example from a 15" laptop I found no problems. Heatshrink tubing, and try not to damage the original silicone rubber housing at the end of the lamp. I push the lamp through the silicone through the hole where the wire attaches to the lamp, and after soldering I put it back.

[@ait-raissabdelaziz8842]

Thank you

[@extion]

The boards and shell look almost identical to my "Acer AL2216W bd" monitor. I'm having similar problems, but not exactly the same. The moment I connect my monitor to power, the light goes green as if it's on and flashes the "Acer" logo, then turns off to yellow and I cannot get it back to green again. I noticed two swollen capacitors that I replaced but I'm still having the same problem. Should I just replace all the capacitors even if they look good? Wish you would have shown how to pull those lamps out and how you worked on them! All that info would have been great! But, amazing job so far! Glad I found this video!

[@alwaysafix]

If it's switching to yellow it's not the lamp. It's going into stanby mode maybe because it's not receiving a signal. Check for a faulty cable. Good luck!

[@DjMeemex]

I have and lcd flatron e2350 and after i let pc in standby like 1 houer or 2 lcd not powerig up ...what i managed to do i played with hand over power up touch button like 5 min and finaly started! but if is off again for 1 houer or more is the same..i have to touch like 4-5 min to start!! Sometime the power buton flash and is starting if i let him but sometime no!! i watchat that board inside in some places it a bit black !

[@aeridyne]

I have a monitor (Acer V173, six of them actually) I was hoping maybe you could help me figure out. After watching this video I was super stoked and thought I finally knew what the issue was, I tried the method and the 4th lamp connection seemed to be the key, I had a spare laptop bulb that is good and when I connected that instead of the original bulb, it came on and stayed lit. However, when I got at that bulb and checked the solder points on the ends, they look totally fine? Like perfect still. I have six of these monitors that all do the same thing and I'd really like to fix them but I can't figure out how. All the caps are fine on all of them. I haven't taken multiple panels apart to try the laptop bulb on each but I expect they will all do the same thing. Could it be a different part on the power board? An IC or something? I can do caps and I could have soldered the wire on a bulb but beyond that I'm totally lost. Any help would be appreciated.

[@conceptproductions7521]

thank you

[@Yurchuk666]

well done!!!

[@walker55able]

Great work

[@alwaysafix]

Thanks for watching

[@Rovnijanko]

In the case of my monitor, the backlight turns off after 2 seconds, just the same as on the video. It's a BenQ G2420hd. I tried your approach with the spare lcd screen and it got lit for two seconds on three of the connectors and on the fourth one, the spare lcd didn't light on at all, though the main screen turned on for 2 seconds. I will try to change the caps, although they seem ok, but do you have any other suggestions? Is this behavior consistent with the scenario that some of the caps failed?

[@mrsemifixit]

Two questions: When testing using ccfls from another screen, do they have to be same size as the bad ones? And what'd you use for insulation after you re-soldered wires on. Thanks

[@gukonni]

So the bad connections to the CCFL were causing the circuit to break, which caused the screen to shut off? But why does the screen work for a few seconds when it's turned on, before shutting off? And why can't the screen operate on less than 4? Why does it "break"?

[@csabaszevecsek8031]

Thank you bro 😁😁

[@deejaystepperke7646]

How about an LG Flatron e2210 that only goes off and on repeatedly in a frequency of 5 minutes during the day, and okay at night? To note is that the room where it's operating heats up a bit.

[@triumphmanful]

My ASUS monitor comes on and shuts off, then on a again, then off. I have to reconnect the power plug to do it again. It won't stay on. No visible problems on the board. So what can it be. It is very bright when on. I am making a light box with it. No VGA needed, just bright light. Any ideas and help will be great .

[@VibratoMania]

Why don't you short the large capacitor by 120v5w or 240v5w lamp?

[@apoorvasgala]

Hey, monsoon season and now monitor is again giving same problem. I am now trying the same solutions, will let you know what happens.

[@alialbadri6674]

can I turn this monitor to tv by change a card of display plz ???

[@euclidgeometry3394]

Hi my pn58b540s3fxza keeps turning off on its own. Doesn't try to power itself on like most problems I see online but just turns off after it's been in awhile. Sometimes it turns off right after it is turned on, sometimes it goes a whole 30 mins, if left idle, it was on all night once. I really Don't know what to do at this point. Should I replace the whole power board?? Please help!!!!

[@alwaysafix]

@Mark Beckitt Much appreciated, thanks for watching!

[@007RAJKOify]

alwaysafix my flatron is heathing, what to do?

[@vaughan212]

+alwaysafix @mark Beckit Hi my fathers LG flatron w2043s started fading a while ago had lines and just wasnt right obviously ive tried a rubber on the ribbon for corrosion and tried to extend my laptop display via vga cables all i got was a white screen any idea what i can try next ? are u from South Africa by the way ur accent sounds close :) im an SA dude

[@alwaysafix]

+Vaughan Stephenson When you connect an external monitor/tv does it work?

[@vaughan212]

hi it gets a white screen....the LG (smaller 20")started going ''fuzzy and blurry then it started havinga whole lot of green and blue mini lines like minuseas stacked with the picture in background...(personally i think it was those tiny insects from the parrot) then it just had white screen....the samsung is a bit bigger syncmaster i bought from a friend for R100 he said hes nt sure if it works....when i pluged it in at home it had no power whatsoever i suspect the powerboard faulty...so i was wondering if i can take the power board from the LG and use in samsung but the connector on the power board has diffrent abbreviations some arte the same like 12v and ground(GND)etc

[@alwaysafix]

+Vaughan Stephenson You cannot change the power boards around. Are there any swollen capacitors on the Samsung power supply board? Have you checked the inline fuse? Good luck!

[@adelmorse173]

*_"everything turned out to be 100%"_* Yeah, right.... Visual inspection is not enough to be 100% sure that a capacitor is fine, you would need an LCR meter or something similar, not every capacitor that fails, bulges or leaks.

[@argenis911]

i have a flatron w2061twq and it has the same problem it turns on for like 2 second then off but the power is still on i am not that experience in this but dont want pay 80 bucks to repair it how do u know if its the ccfl or the capacitor thats the problem

[@alwaysafix]

Thanks!

[@SnakePlizkin]

Hello, My old LG w2361v stopped working on me almost a year ago so i get a new Monitor. Know that i have seen your vid i feel like just trying to bring it back to life. The Problem is, i forgot which CCFL Lamp goes into which slot...is that a problem or can i just do trial and error without breaking anything ?

[@alwaysafix]

+SnakePlizkin The order your CCFL's connect to the inverter board won't matter. I find that the wires have a memory and will most probably point to where they were connected. Good luck!

[@Mr.Unacceptable]

Thanks for this video. I have 2 LG monitors. One stays on for 20-30min then shuts down and doesn't come back on until you unplug it for 10 min. The other is black and flashes a picture for a split second every 20 seconds or so. I have checked all the simple stuff. Could it be the same problem? I don't have a lot of spare parts is the problem. Need to find another dead monitor. Does anyone know of a good spot for Canadians to order parts?

[@alwaysafix]

Replacing the capacitors on the power supply board will most probably sort out both monitors.

[@Elektrifydj]

hey man, first of all YOUR AWESOME!! Found an old non functioning LG flatron 2253V on my parents attic, thought it would be great to repair. after a while i found that the ccfl lamp was indeed not functioning. I want to replace it but don't know what one will be the correct one to replace. Found some on Ebay, but have no clue if they will fit. Could you help me out here? telling me what product to buy or where to look for the correct one is much appreciated. Thanks again!!

[@alwaysafix]

+RelentlessBassMedia Your first job is to remove the lamp from the panel, without damaging the panel itself (the bottom one is much easier than the top). Once you have done that its just the case of measuring how long it is and buying the same one on ebay. Make sure to get the lamps with wires already soldered to make the job easier. Good luck and Merry Christmas.

[@Elektrifydj]

+alwaysafix thanks man have a great christmas yourself too!

[@manjarowithfractals6407]

My monitor goes to sleep but with the logo of Flatron then turn on again. Don't know what it could be.

[@CosmoCircleTv]

You think in this case is dificult to fix? is it better to buy a new one?

[@vafrasan]

thanks, me ajudou muito.

[@alwaysafix]

👍

[@MrFarece]

thank u very much it was helpful

[@alwaysafix]

Glad to be of help. Thanks for watching.

[@anielius5438]

how do you take out the lamp?

[@coondogtheman]

I have an LG Flatron L1717s monitor and it has the pulsing power light and it struggles to power up. I took it apart and like an idiot took half the caps out of the board and I dont know where the right ones go and they are the same siZe but different values. Any idea where they go? I know I should have taken pictures but I didn't.

[@alwaysafix]

check out badcaps.net very resourceful forum, good luck

[@CosmoCircleTv]

I am having a problem with this monitor in my studio, when i turn the computer on every morning since this week, the blue led blimps, but the monitor doesnt make any visual response like it was switch off, i try to switch it off, on the led, but it doesnt not work either... after a while when i was searching using my laptop for this type of problem solution, the monitor led becomed orange again, and i turned it on and it was normal again, switch on the computer, and normal, what is happening?

[@eewsmart]

thank u bro--------->Respect(already done it :D)

[@alwaysafix]

+Deki Mirceski Much appreciated and thanks for watching.

[@christochiramukhathu4616]

Initial parts of the video are good. But later, you are not at all showing how to deasseble the CFL lamps. Also you did not show how to test CFLs, connecting to a laptop. All these are unclear. You had to show them well.

[@applebees7532]

can anyone tell me how to open the hinge cover

[@alwaysafix]

Have you tried another monitor on the same computer?

[@obeseminion8271]

Thank you so much it worked

[@vasirock]

thx i just needet to open and clean ... thx

[@OrestisG]

Hi guys, I'm facing a similar problem, though my screen (an LG 2240S) continuously switches on and off when I press the button (not just the backlight, but the power light as well). The caps are visually OK (I don't have an ESR/Capacitance meter). Any ideas?

[@alwaysafix]

Orestis Gklavas A capacitor replacement kit for that model only costs a few bucks. That's where I would start. Good luck!

[@zalayeta007]

hi, nice video very usefull thank you, but i still don't get it, how you did at 7:31 how did you get the lamps out of the panel ? because i think we have the same problem here,the capacitors look fine, so i'm guessing it's the lamp, please show me how you extracted the lamp out of the panel? thank you for your reply !

[@alwaysafix]

+Yacine Zidane Before you extract the lamps from the lcd panel, you need to connect a working ccfl lamp to the inverter to test your theory. Good luck!

[@zalayeta007]

alwaysafix thank you very much i fixed it right now, i had the same problem as you, the monitor turns on for 3 secondes then the backlight turns off, i soldered the lamp and it worked ! thx dude you just savedc me 200$ or so

[@alwaysafix]

+Yacine Zidane Congratulations on your fix and glad this video helped you out.

[@ashokmohan845]

Can you give the ic model number on it ( ic 802) in the board

[@alwaysafix]

Could be that you have some faulty capacitors. As the capacitors weaken you will get a monitor, that works sometimes and other times not. If the screen turns off while you are using the computer then it's most probably the caps.

[@seandiamond8926]

alwaysafix no

[@virgilmachine2504]

This is helpful. I replaced the 6 caps in a LG W2243T-PF as indicated elsewhere, but the problem persists. The symptoms are as described here, so I will try this fix. One thing: I'm not clear on how you use a laptop to test which bulb is defective--could you elaborate? Thank you!

[@alwaysafix]

Virgil Machine It's basically unplugging one lamp at a time and replacing it with a good CCFL lamp. If the lamps remain lit you found your bad lamp. Good luck!

[@vaughan212]

+Virgil Machine i think he means via vga cable for signal

[@virgilmachine2504]

+Vaughan Stephenson Thank you. I haven't tried this yet, but my understanding is that he meant to open the laptop, disconnect a CCFL from the controller, and replace each monitor CCFL one by one until you find the one that's bad. +alwaysafix, please confirm How would I do that with a VGA connection?

[@alwaysafix]

+Virgil Machine Im not talking about the VGA connection, Im talking about substituting the CCFL lamps one at a time until they stay on indicating the faulty CCFL lamp. Good luck!

[@OMGWTFLOLSMH]

@@alwaysafix - I don't have a spare CCFL lamp to troubleshoot with, unfortunately.

[@tmfazlul]

@alwaysafix will this work on W1942S 19 inch thanks

[@alwaysafix]

***** Yes. Good luck!

[@guilhermegeek7198]

Thanks

[@KAIBIGANG_ITIM]

You didnt show on your video how you remove those ccfl lamp and put it back again on the panel...tnx

[@brianclarke2986]

Help, trying hard not to break any bezel's so can anyone please tell me if there are any clips on the corners, it seems there are but how much pressure can you put on the frame before it breaks?

[@alwaysafix]

BRIAN CLARKE Try lifting the bezel with your fingertips from the inside edge. Start on the top middle working your way towards the corners, then the side middle working your way towards the corners and then finally the corners. Just do not put any pressure on the lcd. Good luck!

[@ironspider9026]

How to get the lamp out of the panel this is where I am stuck at and you completely skipped that part.

[@malikedmond8398]

Hate when people do that shit makes the whole tutorial useless if you don't give a detail demonstration

[@jorgebazan2155]

Yes I want to know how

[@Aliens4everR]

Ammmm... really good video ! but I still haven't found the broken part yet. lamp seems to be alright, capacitors are okay too.... where I should look now ? (The problem and Flatron are exactly the same as yours).

[@alwaysafix]

Please explain exactly what happens when you power on the monitor?

[@Aliens4everR]

alwaysafix It runs about 2 sec. and then turns off. Like I sad, I have exacly the same monitor and problem as yours. But when I opened it (thanks to you), I haven't found any troubles. The lamps are ok, I checked them, they don't turn off, they can still shine. So I packed it again to the case, power on it and.... its still happening 2 seconds, and turns off. When I push the power button twice, It turns on again for a 2 seconds that I can see a wallpaper icons etc. and It turns off. (Sorry for spelling mistakes).

[@alwaysafix]

Aliens4everR Even though you see the lamps switch on, one could still be faulty causing the circuit to shut down. You have to connect another lamp replacing one lamp at a time. Switch it on and make sure the lamps remain on. Good luck!

[@vanzsanchez6980]

Is it OK to replace a capacitor which has 820uf to 1000uf?

[@kjarby69]

Van Beethoven Villanezo No! Use same Mf Can use higher voltage rating capacitor, not lower voltage capacitor

[@GoranMrganic]

I have an W2242S that died on me today... same issues... turns on, and goes off after 2 seconds. Took it apart, the board with capacitors looks fine just like here. Unfortunately, I have no other screens to test lamps with, so I would like to check connections, but I have a problem there, since that hasn't been shown here. How did you get the lamps out? Any help would be very appreciated, since that one in video and mine seems pretty similar in design.

[@alwaysafix]

+Goran Mrganic Since its easy to damage the lcd removing the ccfl lamps, its not worth it just to check. You need to find a spare ccfl lamp for testing. Good luck!

[@GoranMrganic]

alwaysafix Thanks! But that doesn't really answer the question: how to remove the lamps. In anyway, I already opened it, and one of the lamps fried as it has entire black ends, while the others are almost as "white" as everywhere else. So, now my main problem is to put it all back together :D lol

[@meronmeron-m3m]

what could be the problem if monitor os turning om and off.. does not ficker though.. but after couple of minutes it will stabilizes

[@tanveerjan9954]

Mine is lg flatron 17". It turns on and after some time it starts to turn of and on. What could be the problem? The caps in the circuit is fine though

[@alwaysafix]

check out my other video on testing ccfl lamps, good luck

[@jimarkgaytano8495]

pls how to fix or repair the LG flatron W1952S no power supply pls thank you. asap reply.

[@alwaysafix]

You need to take it in to have the power supply board checked.

[@909fz1]

what is used to insulate the lamp?

[@alwaysafix]

Heatshrink tubing will do the trick. Good luck!

[@vyli9318]

is there an easier fix ? -.-

[@Yorkieman1975]

Got an LG Flatron L194WT-8F (19 Inch Monitor) that switched itself off and now the power button doesn't work... the small indicator light (Blue) doesn't even come on ! Anyone any idea what the problem is and would it be fixable ?

[@alwaysafix]

Have you looked at the capacitors on the power supply board? Good luck!

[@PsychoBunny85]

i managed to undo all the fastener around the screen, but for some reason i cant seem to just pull out the insides of the screen away from the back pannel, it seems locked, is there some kind of a fastener there too? i tryed pulling hard, but if i pull any harder i think the plastic will just snap, thx

[@alwaysafix]

PsychoBunny85 Remove the stand as sometimes there are screws hidden there. Is your model the exact same model as the one in the video? Good luck!

[@PsychoBunny85]

yea, it was the stand, it is the same model, but i guess the standard of making them for other countries varies, thx!

[@apoorvasgala]

Update: My monitor is working just fine. But I still have to switch it off and on only ONCE now. In second go out stays. Then there is no problem. Today on Monday morning I switched it on after Sunday break, it has started displaying after 1 on/off cycle. This is update for you just in case you face same problem.

[@helio3630]

Any further updates mate? Mine has the exact same issue, I have to turn it on many many times until it stays on.

[@apoorvasgala]

@@helio3630 After some days it worked normally. I have not used my monitor since 21st March till date due to lockdown, but till then there was no problem at all now.

[@apoorvasgala]

@@helio3630 it has worker very well. Let me see how it works after lockdown is over. I guess till then monsoon will also be there. All dusts will catch moisture. If needed I will have to clean it again. But bottom line is that after certain years you need to service your monitor, cleaning dust and all. Thats what I feel now.

[@radust85]

U saved me ty m8 for this uploade hope you get out of youtube as much as u can

[@alwaysafix]

Blurry HDIM Well done on your repair and much appreciated for your comments. Thanks for watching.

[@kurichygramapacnchayat788]

my dell monitor switch off after half hour..while working...starts working after it is re plugged.. again it gets off after few minutes.. please give a remedy

[@alwaysafix]

+Kurichy grama pacnchayat First step is to check the capacitors on the power supply board. Good luck!

[@NinjasGamingLive]

Can u help me lg monitor flickering double images and moving lines

[@alwaysafix]

Connect another screen first to rule out graphics card issues and get back to me.

[@NinjasGamingLive]

K

[@sunilkantiwal6129]

my monitor only white display nothing seen only white how repair

[@AmitSharma-hn7pv]

mera monitor me on off home raha hai kaise thik kare

[@indigente1971]

Hi ! I have one W2253V-PF and one of the backlight is broken near the wire plug ! how to fix it ! Or were to buy one backlight ?!! thank"s in advance !

[@alwaysafix]

Most suppliers supply the backlight without the wire anyway, so you need to get it resoldered. Good luck!

[@loomenate]

i have the same monitor but it happens sometimes, but sometimes dont...it started happenin 2 days ago and i have this monitor for 5 or 6 years...should i repair it?

[@alwaysafix]

The power supply board needs to be checked for bad capacitors. Good luck.

[@loomenate]

thanks but what if caps are good?

[@alwaysafix]

NiX Check out my other video on replacing ccfl lamps. Good luck!

[@loomenate]

i did everything but its not working, i bought new monitor...btw thanks for help

[@alwaysafix]

Replacing capacitors only costs a couple of dollars, and if you are handy with a soldering iron, you can do this with no problem. Make sure the mains are disconnected at all times and make sure you get the polarity of the capacitors correct. If you check through my videos, you will find a screen repair where I replace capacitors with a step by step tutorial. Good luck.

[@klevishoxhaj3862]

Who capacitor have problem

[@hellosharemarket6637]

power is on but not display

[@peshmadscientist1833]

Same model, dead dead dead....ic501...strw6053 plus zeners

[@GodlyDinamix]

Are you South African?

[@ToniML200]

Windows XP... You'll be missed...

[@danielm.4359]

Nice video just I CANT SEE SHIT.

[@mafiaguyzxxx]

Fuck... How to get out the lamp

[@juhaheikkila]

Chinese quality.. There are tens of thousands of these out there, broken..