LG L196WTQ-BF LCD Monitor Repair
Here we will be doing a repair on the LG L196WTQ-BF LCD monitor, this unit has no display or power light. The same issue we will be solving here could also cause the picture to flicker or the monitor to be very slow to show a picture. The power board in the unit is AIP0157 Rev. C this board is also used in the LG L194WT other brands may use the same one. Update: Reader Daniel says this kit also works on the LG L1932TQ-BF. The repair should take about 30 minutes to complete.
To do the repair you will need the following tools: Soldering iron, de-solder braid, Phillips screwdriver, flat blade screwdriver. You will also need the following electronic parts: qty(2) 1000uf 25v capacitors, qty(2) 1000uf 16v capacitors, qty(1) 680uf 25v capacitor and qty(1) 470uf 25v capacitor. We sell a repair kit with all of the parts for $12.00 if you need to get one.
If you don’t want to do the repair yourself, use the service request link above. Most monitor repairs run $30-35 plus return shipping.
If you would prefer to watch a video on this repair it is available HERE.
Here we have a non functional LG L196WTQ-BF flat panel monitor that has no power at all.
The case should separate easily but if not then you may need to use the flat blade screwdriver between the two halves. When you get a small section open then just work your way around the outside edges until its is all detached.
After the control panel cable you will need to disconnect the display panel signal cable. The ends has release catches hat will need to be pressed to remove in from the socket.
After these cables have been unplugged then you can flip the metal shield over to reveal the driver board and the power supply that we will be working on. To remove the power supply board disconnect the four backlight plugs circled in yellow and then remove the screws circled in red.
This is the power board that is causing the problems. The model is AIP0157. The parts we will be replacing are circled in yellow here. At location C206 and C202 replace the 1000uf 25v caps. At location C205 and C208 replace the 1000uf 16vcaps. The last two to replace are at C203 – 680uf 25v and C207 – 470uf 25v. 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.
Updated 4/25/2012: Added the video guides
Part 1: Disassembly
Part 2: Board repair
Part 3: Reassembly 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!