It started with a monitor that had clearly been through it: a burning smell drifting out of the case and half the screen glowing a dull brownish tone. PhilStudio decided that a worn secondary LG Flatron W2242T was still worth saving, and the result is a repair that any electronics tinkerer can learn from.
Getting inside took patience. The rear screws came out first, then a small screwdriver coaxed open the plastic bezel clips, and the metal chassis was freed after unplugging the wire harnesses and an internal ribbon cable. Once the power supply and inverter board was exposed, the damage was plain to see: scorch marks and electrolytic capacitors with visible bulges.
The rebuild itself is where the care shows. Swollen capacitors were lifted off with a Weller iron and Super Wick braid, and fresh 1000uF and 680uF parts rated 25V at 105C went in with polarity watched closely. Blue mounting putty held components flat against the board while soldering, which strikes me as a smart trick for keeping everything aligned. A Meterman 5XL multimeter traced the circuits and turned up the real culprit: two dead surface-mount MOSFETs, a 62TO3GH and an AP9563GH in TO-252 packages, creating a short. Those were swapped out, the board got a cleanup with cotton swabs and contact cleaner, and everything went back into the metal frame.
It was not a one-pass fix. The first reassembly gave nothing but a blinking blue power LED, and after the MOSFETs were replaced the panel came up solid white, traced to the display ribbon cable left unseated. Reconnecting it brought the monitor fully back, showing the LG logo and then the desktop. The maker says it took many attempts but was genuinely fun, and honestly, that persistence is the best lesson here.
Project by PhilStudio. Watch it on their YouTube channel: