A couple of days ago during the weekend, I booted up my trusted pc lo and behold I heard the Windows startup sound but my LG monitor (LG1753S) screen is blank. I had this monitor for about 3 or 4 years now without any glitch. Used to leave it open for 72 hours sometimes. And this time it had failed to start up. So after checking the power is properly plugged, I shut down my pc again. Turned off the EPS and turn back on, the monitor power lit up(hooray?) but after a few seconds its gone again.
Sorry for no pictures as the pictures got corrupted.
So a little bit of guts and the need to save on service fee, just DIY(Do-It-Yourself), make sure you have the right tools, a philips, screwdriver, soldering iron, soldering lead and check the ratings of the capacitors before purchasing.
October 1st, 2010 at 4:09 am
Ive got a LG L1952TQ and it works fine until … I can start a game and then change the resolution, Popp of "energy saving mode digital" led goes from blue to yellow, but it is Windows is still active, as a matter of fact, everything is still active .. after a few ctrl-alt-del and tabs before and behind it is usually in the power mode again .. Does anyone have an idea of this annoying problem please let me know!
October 20th, 2010 at 9:42 am
the best soldering iron are those using non-filament heaters, the tip should be made of steel alloy too.~”
April 22nd, 2011 at 6:21 am
I have an LG FLATRON Wide L226WTQ LCD monitor on my PC. The Blue light for the on off will no longer light up and I have to turn the powe strip on and of sbout 10 time to get the thing to turn on. I found your site with google, but no pictures show up. Still I will look at the caps in side. Thanks for posting this $3 to $12 is better than paying a few hundred for a new monitor.
August 12th, 2011 at 3:31 pm
I ‘m having the same problem with my LG192ws plz plz help me by emailing me pics(capacitors) and the name of the electronic shop
September 28th, 2011 at 12:08 pm
Thanks for providing the link to our web site. When doing repairs of this type be sure to use low ESR, high temp and high ripple current capacitors in the repair or you could damage the power supply board. The power supply boards have a high frequency inverter that will not work correctly without the right capacitors and could even short out if the wrong parts are used. The parts from places like Radio Shack will not work. Check out this page on our site about what brands and series capacitors to use. http://www.ccl-la.com/blog/index.php/capacitors/ We will be glad to help users repair their monitors, just let us know what your have questions about.
tech@ccl-la.com
October 12th, 2011 at 4:20 am
LG L246WH BN Monitor fails to start.
PROBLEM SOLVED
I have an LG L246WH monitor, just outside its 3 year warranty.
I had BLUE BLINKING LIGHT and intermittent turn on and or off, eventually failing completely. The blue light even blinked when switched off!
My SOLUTION, was to replace two blown capacitors on the power board,
AND IT WORKED!
Other blogs have suggested that the SAMWHA WB series capacitors may have been a problem, and in my case they certainly were. The faulty components were, two identical capacitors….described as…’High temperature radial electrolytic ultra low impedance capacitors-10v, 3300uf, 105 degreeC. (they may be different on your unit)
Most online electronics outlets stock them, at around 60p each! I got my caps’ from here:
http://stores.ebay.co.uk/h-m-comp
Item ref’:
10V 3300uF 1hmcomps@aol.com05°C Ultra Low Impedance Capacitor X 4pcs (120631012476)
If you interested ……….
THIS IS WHAT I DID
I am not an expert but have the skills to do this sort of job, can you do it?, judge for youself.
TOOLS
You’ll need a flat blade screw driver, small to medium cross head screw driver, magnifier recommended, fine point soldering iron, fluxed solder, plastic tub for screws, towel, spare table and a steady hand!
1. Remove the stand, four screws.
2. Carefully remove the screen bezel starting with a flat blade screw driver and gently lift one corner then move along each successive side until it pops off. Be patient and delicate or you may trash your bezel!
3. With the bezel removed, place the unit on its back, the screen assembly is not screwed into the case and will remove with careful manoeuvring. You will also need to lift out the switch circuit boards at this time as well, they just slide out.
4. With the case fully removed place the monitor face down on a towel or similar protective soft material ( I presume you still want it to look like new when you’ve finished this job!) Remove the four small screws, (2 on each side) and the two screws securing the panel to one side, and remove that panel. Beneath it you will find a row of connectors, disconnect them all. You can now lift the metal back panel from the main chassis, as you do also disconnect the cable and connector that become visible.
5. You can now see two circuit boards, you want the one that has the power socket attached., and remove its five screws.
6. Carefully remove and turnover the board to expose the components, the faulty capacitors on my board were ‘C202 & C203′. The blown capacitors are identified by slightly raised or domed tops.
7. You will need to de-solder and remove these components and replace with new ones, which might be slightly larger, for this part of the job a fine point soldering iron is recommended and some degree of dexterity.
8. The de-soldering and re-soldering operation can be fiddly and must be done with much attention to detail, a magnifying glass is very useful and take care not to solder across adjacent tracks! TAKE A CLOSE LOOK AT THE AREAS YOU ARE ABOUT TO DISTURB AND NOTE ANY/ALL OF THE TRACKS THAT ARE CLOSE BY, EVEN TAKE PHOTOS FOR REFERENCE.
9. Re-assemble is opposite to dismantling,
10. Apologies if I have missed out an odd screw or so in the dismantling operation, I can say that I didn’t find any trick/hidden screws or attachment points, unclipping the bezel was the hairiest moment.
This operation solved my dead monitor, and I offer the above solution in the best of faith and hope it can help you if you are suffering similar issues.
NOTE: this solution was for an LG L246WH monitor, it may or may not be the solution to similar issues on other monitors, this has to be your judgement, GOOD LUCK.
NO RESPOSIBIKLITY CAN BE TAKEN FOR ERRORS RELATING TO THIS SOLUTION.(But it worked for me)
.
November 2nd, 2011 at 3:08 pm
Hi friend!
Same problem with C202, C203…thank you very much for your little “workshop manual” !!!
My panel is working now!
Best regards from Barcelona.
November 13th, 2011 at 7:09 am
I ‘m have problem with my LG192ws plz plz. And I Change 2 caps (220, 35v, 1000microfarad 25) which were obvious.
But when I change it keep blowing after 1 minute monitors switch on. Please help. I change the 1000μƒ for twice it lasted less than minute. What could be wrong ?
November 15th, 2011 at 9:35 am
I ‘m have problem with my LG192ws plz plz. And I Change 2 caps (220μƒ, 35v, 1000microfarad 25v) which were obvious.
But when I change it keep blowing after 1 minute monitors switch on. Please help. I change the 1000μƒ for twice it lasted less than minute. What could be wrong ?
January 26th, 2012 at 5:49 pm
hi salar,
advise to do the following. check it up from the start. replase the fuse, just to be sure also the bridge diode rectifier (you can also just test them and put the new ones, but better put new at this case), recap all board, test all diodes, especially the zener diodes, and then turn the attention to check all resistors of the power supply. this worked for me. i advise you to get the repair guide for your monitor, and so you can identify there components needed. but do not test it until u replace all of them.
i repeat, do not test until you replace all of them. its also possible for you the little solenoids can be the problem, but those can be tested easily i think. most probably just a bridge rectifier or diode or resistor but however just change all of them. if you cant then send me email to fitimmiho@yahoo.com so i identify the parts for you. they could cost approxymately 10 $
February 2nd, 2012 at 9:43 am
Worked for me! Thanks a lot
March 15th, 2012 at 8:15 am
hi thanx alot for the great info but i got problem and need your help plz i have the same monitor 17 flatron lg and the problem is the two wires in the power cable got toutched and since then every time i plug another trusted cable the power button start blinking plz need help fast ?
March 27th, 2012 at 5:28 am
Hi Guys
Similar problem with a LG W2452T near enough to effect the fix in the same way. 4 bulging capacitors replaced (made in 2008 so must have been some of the last effected ones) now all back and working.
Thanks for all the help and links