AOC LM725 - User Manual

Questions and Answers

W
william87Aug 3, 2025
How to troubleshoot no power on AOC LM725 Monitor?
- J
  Jenna RiveraAug 3, 2025
  If your AOC monitor has no power, first press the power button to see if the picture appears normal. If not, reinsert the AC power cord, ensuring it's properly connected and that the power outlet is providing a normal 100-240V. If the issue persists, measure U201 PIN2, it should be 2.5V, and U202 PIN2, it should be 3.3V. Also, verify that X601 and X401 oscillate and their waveforms are normal. If problems continue, consider replacing U601, checking or reinserting the Adapter/Inverter, checking CN201, or replacing U201, U202, X601, X401, or U401.
M
Melissa BarnesAug 12, 2025
What to do if my AOC Monitor has no picture and the LED is orange?
- K
  Kimberly HernandezAug 12, 2025
  If your AOC monitor's LED is orange but there's no picture, and the X601 isn't oscillating, try replacing X601. Also, check the reset circuit for any issues and examine the corresponding components. Measure U201 PIN2 to ensure it reads 2.5V and U202 PIN2 to ensure it reads 3.3V. If problems continue, consider replacing U601, U201, U202, or X401. Also, check the corresponding components.
A
Angel BakerAug 25, 2025
Why does my AOC LM725 Monitor have a white screen?
- B
  Benjamin WilsonAug 25, 2025
  If your AOC monitor displays a white screen, start by measuring the voltage at the base of Q204. Then, check if Q204 is broken, or if the reset circuit of CN503 has a soldering issue. Verify that U601 is functioning normally. If the issue persists, consider replacing X601, PANEL or U601.