In this repair guide we will show you how to repair a LG L227WTG-pf 22″ LCD monitor with power supply issues. This model uses the Lien Chang Aip-0165 power supply board. If you have a unit that has no power, a wavy display, is slow to show a picture or just has a blinking power light and no picture then this repair guide should help you get it back going again.

To complete the repair you will need the following tools:
Phillips screwdriver
Soldering iron
Lead free solder
Desolder wick
and then the capacitors that need to be replaced.
Qty 3 1000uf 25v capacitors
Qty 2 680uf 25v capacitors
Qty 1 220uf 25v capacitor
Qty 1 33uf 50v capacitor
Be sure to use good quality low ESR, high ripple current, high temp capacitors or you can damage the power supply board. More information on getting the correct capacitors can be found on our capacitor page.

We sell a repair kit with all of the proper value and size capacitors for $12.00 if you don’t want to worry about getting the correct parts.

Here is a picture of the power supply board with the capacitors that need to be replaced circled in yellow:

Here are videos showing how to disassemble and repair the monitor.
Part 1: Dis-assembly

Part 2: Board repair

Part 3: Re-assembly and testing

This is not guaranteed to solve all problems but in most cases this is the issue with this model.

If you don’t want to do the repair yourself, use the service request link. Most monitor repairs run $35-40 plus return shipping.

Be sure to check out our forums section where you can ask questions about this repair or find information about other topics.

Post a comment below to let us know how your repair went!

21 Comments on Repairing a LG L227WTg-pf 22″ monitor – No power

Victor Vess on Sun, 28th Oct 2012 3:13 pm


Amazing – ordered the kit and everything worked perfectly. Thank you for providing such a thorough guide!!

David Santy on Sun, 25th Nov 2012 11:20 pm


So glad I found this guide! I’ve been having troubles with my LG monitor with the power button flashing and taking forever to start up. It would run fine all day after that, but it’s been sitting without starting for longer and longer recently. I thought I was going to have to buy a new monitor!

Just ordered the repair kit. Thanks very much!

David Santy on Sun, 2nd Dec 2012 6:20 pm


The kit worked a treat! The capacitors are higher quality than the stock ones on the power board.

Leybl on Sat, 29th Dec 2012 11:17 am


Hi,
In Israel we have 220V power.
Would the same capacitors be used on the model in Israel? .

CCL_TECH on Sat, 29th Dec 2012 1:32 pm


Yes, the capacitors are the same in all units

Mike W on Sat, 9th Feb 2013 1:25 pm


BACK FROM THE DEAD!!! So glad I didn’t throw it out when it died a year ago. The kit worked perfectly. I didn’t think it would be anywhere near as easy as it looks in the video, but it was–even for someone like me who had never used a soldering iron before. Makes me want to go find some more broken monitors to fix. Don’t hesitate to buy the kit…well worth it.

LTCParisi on Sun, 24th Feb 2013 3:34 pm


I ordered the repair kit but it came with no schematic of the board as to which caps go where. Anyone have a link to info on the board which shows this info?

admin on Sun, 24th Feb 2013 4:59 pm


The repair guide has the picture of the power supply board. The easiest way to do the repair is to remove one capacitor and replace it then go to the next one. The values for each capacitor are printed on the side of the part, just match the old part to the new part as you go.

LTCParisi on Sun, 24th Feb 2013 6:01 pm


Too Late, I removed the caps a few days ago and can’t remember all the correct locations.. dumb I know so help me out please

LTCParisi on Sun, 24th Feb 2013 11:12 pm


I downloaded the service manual online and fixed the problem.

Gene Baker on Wed, 27th Mar 2013 3:42 pm


Great instructional video, you are certainly good at changing the capacitors, but I don’t think I could do the soldering. Do you sell the boards already repaired for the LG L227WTG Monitor?
Thank you,
Gene Baker

Gene Baker on Mon, 1st Apr 2013 11:44 am


I think I forgot to check the box to notify me
by email.
Gene Baker

admin on Mon, 1st Apr 2013 9:55 pm


Hello Gene,

We can repair your board but we do not have the boards for sale.

Joel M. on Tue, 2nd Apr 2013 12:20 pm


Got my repair kit in the mail yesterday, along with a starter soldering kit, and ran through the repair instructions last night. This was the first time I had ever soldered anything but your instructions were clear and easy to follow. My L227WTG is working well.

Gene Baker on Wed, 3rd Apr 2013 8:34 am


Well, I guess I am going to dive into it…
Question… Do I get the starter soldering kit
along with the capacitors for the $12.00?

Gene Baker on Wed, 3rd Apr 2013 9:53 am


Sorry, I see now where the items are sold separately.

Gene Baker on Wed, 10th Apr 2013 11:07 am


“A Successful Surgery” The Capacitors and Instructional Videos worked like a charm! Everything went Perfectly. Monitor powered right up… after weeks of a flashing blue power button.
Thank you for a “renewed” LG L227WTG
I’ll do my second L227 when I get the Flashing Blue Light Of Death

Thanks again,
Gene Baker

Mike on Mon, 6th May 2013 8:35 am


Hey guys I need your help. Bought the capacitors the other day because my L227WT was slow on powering up. The last time it worked, over a minute passed to fully boot up and show a picture. Anyhow, so I bought the kit, soldered it in and proceeded as shown in the video. Just as I put in the powercord I heard some quit clicks and right after that smoke. At first I thought there was somethign wrong with the caps or my soldering however the broken part is on the dvi-vga diplay board itself. It’s the part right to the huge red/white wiring panel connector with the tag: A1241 Y it blew on the backside.
I really hope you can help me out or guide me in some direction. I love this monitor and it’be a shame to throw it in the trash.

Thanks,
Mike

Gene on Mon, 6th May 2013 4:01 pm


You can find the video board on eBay. About $18.75.
From China. Used boards but they look good.
Gene

Keenan on Wed, 8th May 2013 8:04 pm


Wow that was unusual. I just wrote an incredibly long comment
but after I clicked submit my comment didn’t appear. Grrrr… well I’m
not writing all that over again. Anyhow, just wanted to say great blog!

Mike on Thu, 13th Jun 2013 5:41 am


Hey it’s me again. Bought a video board on eBay, switched them, as I turn on the screen the same piece blew again. I found a service manual and the specific model, it’s the KTA1241. Even found a chinese distributer who sold me some. Today I solded the new one on the video board, turn on the monitor and bam, there it goes again. Looks like my power supply won’t cooperate with me anymore.
I asume nobody else head or heard the same problem before? I really love this monitor and would like to see it working again.
Hope somebody can help me out.

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