Having problems with your AOC LM729 17" LCD Monitor ?

LM729. starts ok, but then shuts off after a few seconds. I have taken the boards out and I dont see anything swolen or burnt.


Answers :

This is a pretty common issue with this monitor.
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\015\012Please try the following (credit rodger527):
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    \015\012
  1. First you have to remove the back plastic plate and four countersunk screws - this removes the monitor stand.
  2. \015\012
  3. To remove the the front silver plate, you wedge a screwdriver at the top center of the screen , and work your self downwards and outwards in both directions
  4. \015\012
  5. As described below, locate the toroid's solder joints underneath pcb board, heat the joint(s) up with a low wattage soldering iron ( Weller or anything else).
  6. \015\012
  7. A little serviceman's trick in removing solder, heat the joint up and then add solder (60/40 -7 Multicore or better) like a welding stick (plenty of resin near the affected joints), when hot then use your solder (Soldapullt or something similar) and take off the solder (the resin does a wonderful job in the removing the solder).
  8. \015\012
  9. Check the condition of the tinning on the torrid leads, if okay then re-solder but if tarnished use a knife and clean them.
\015\012Resoldering the following coils usually fixes this problem:
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Repair Help & Product Troubleshooting for AOC LM729 17" LCD Monitor

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