LCD Monitor The LCD turned white and I don?t know why. It doesn?t show the view. Can somebody help me to find out what is going on? Thank you

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check caps

Samsung SyncMaster

Part Number: LS23CMZKFV/ZA
Product Line
Samsung SyncMaster

• Native Resolution Full HD (1080p) 1920 x 1080
• Contrast Ratio
  1000:1 / 20000:1 (dynamic)
• Color Support
  16.7 million colors
• Horizontal Viewing Angle
  170
• Vertical Viewing Angle
  160
• Brightness
  300 cd/m²
• Horizontal Refresh Rate
  75 kHz
• Vertical Refresh Rate
  61 Hz
  
• Max H-Sync Rate
  75 Hz
• Max V-Sync Rate
  61 Hz

the video settings on your computer has changed to a setting that the monitor doesn't like! try entering your computer in safe mod and change the setting to a max of 1024x768. however, if your video card has a dual output and you have 2 monitors connected at the same time then this is your problem. make sure that the 17" lcd is monitor 1 and the other monitor #2. one of the monitors is set higher the the 17" lcd and when it is not connected the computer may think this the setting for the 17" lcd and not the other monitor which may be hdmi or 1900x1080 which the 17" cannot read this it is out of range!

You can check the connection at the back of your PC on where the monitor is connected to. It may be loose.

Hope the above helps. Good luck!

This could be a loose LCD connector to the motherboard. In this case, you'll have to disassemble your laptop and tighten/clean the LCD connector. Here's the how to:

http://erkinson.altervista.org/acer-aspire-one-532h-aggiornare-ramhdwifi-smontare-lcd/

good luck

This is a problem with the CCFL bulb (the back light) or the inverter that powers it. This bulb is inside the lcd pannle and requires great care to replace. Some local PC Repair shops will be able to fix it however most will not. The inverter which is (most likely) the problem can be found on ebay for $20-30 USD and is easily replaceable it is general a small curcit board below the lcd pannle hidden in the bevel. However same times the board is merged into a much larger board which will be tricky to replace as it is specific to the monitor.

Don't forget to rate below.

Ksto, It could be a bad connection somewhere. Try checking: -Where the video cable plugs into the PC. Remove and check for bent pins, corrosion and replace and firmly reconnect using the thumbscrews on the connector. -Where the video cable plugs into the monitor. Some LCD monitors have removable cables some don?t; if yours does follow the same procedure outlined above. -If your video card is not part of your motherboard it could be the video card not being seated properly. Remove it and reinsert the card. -If still nothing I would try entering the monitor configuration menu (using the buttons on the monitor) and reset it to factory settings. -Next step would be connecting your monitor to another PC to see if the problem follows it. If it does I would immediately contact the manufacturer for a warranty replacement making sure you read your list of what you?re already tried. -If the problem doesn?t follow the monitor then that points to your video card. If that?s the case let us know what you?ve found out and we?ll go from there. Good luck and please don?t forget to rate this post.

This is an old post but maybe this will help someone else......

I have sold a lot of these LM729's a few years back and now, out of warranty, they are starting to show these same symptoms. I was stumped at first but finally did some real testing on them and found that in every case it it the 1000uF capacitors that are faulty. Look at the board and you will see 2 capicitors, the barrel shaped components, that have 1000uF printed down the sides of them. Both of these should be replaced even if only one is bad because chances are the other will go soon as well. You can usually pick these up for under 2 bucks each at your local Radio Shack. Get ones rated for 35 volts (35V), the ones on the board are 16vols but I usually try to go a bit more robust when I replace capacitors. The rating is just how high the voltage can go so it's okay. They are usually more durable since they are to handle higher voltages. Just take the LM729 apart, remove the power board, desolder the capacitors, clean up the holes, (Be gentle in desoldering them, you don''t want to pull the things, you will pull off and possibly tear the copper foil pad that you need to solder the new cap to) Install the new capicitors minding the polarity, as in there is a MINUS sign on the capicitor and this must go in the hold with the matching MINUS sign. Solder the leads, clip the excess off. Reassemble and you'll probably find that LM729 working just fine! These are very good monitors and very rugged. AOC isn;t at fault for this failure. The Chinese have been making scads of bad capicitors for a few years now. Anymore, if there is an electronic failure it can be traced back to bad capicitors.