Repairing a LG L227WTg-pf 22″ monitor – No power
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:
Lead free solder
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.
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!