Question about LG Studioworks 700S 17" CRT Monitor

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How can i open mylg e700.

Sir can u please tell me how do i open the back cover of my monitor. when i turn on my monitor, the green is blinkin ver y fast and my monitor didn;t turnon

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  • jalees_21 Jul 23, 2008

    sir can u please tell me how do i open the back cover of my monitor. when i turn on my monitor, the green is blinkin ver y fast and my monitor didn;t turnon

  • karthik_vish Aug 27, 2008

    I have Studiowors 700E Black Monitor. When I poered on the led Blinks very fastly. There is no display. I want to Know How To Open the Back Cover. Please Help me.



    Karthikeyadurai

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I have repaired various LG monitor & they all seem to suffer the same problem with the led flashing. The fault is fixed by replacing Q719 which is a Mosfet IRFS640 & C744 100uf100v cap, also check caps in power supply a couple of 220uf63v pop from the bottom. I have had the line output transistor s/c.If its the one Im thinking of, to take the back off . Tip the screen on its face & with a pair of long nose pliers wedge them into the clip at the bottom & use a flat blade screwdriver to prise the bottom slightly away. Then place the monitor upright using your screwdriver you have to pop the top. Push 2 inches from each corner. You have to push hard. Good luck.

Posted on Sep 04, 2008

  • grabba Sep 04, 2008

    Note to replace Q719 you may have to remove the heat sink as well.

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(Please be advise that if you don't have the knowledge, the proper skills and the right tools to open the back cover of your monitor and replace its part...don't risk it...
Otherwise, bring your unit to a credible technician and avail of warranty if there is any.....) If you have guts.. then do the following steps..

You said your monitor will blink but no picture display... well, there are possible reasons why this problem occur..

1. Open the back cover of your monitor..Check the power supply section for possible loose connections and blown capacitors.. Resolder any loose terminal connection on the pcb. Check for any blown capacitor, replace the capacitor with exact value, and also replace any bulging capacitor..If you have successfully replace the parts you can try to turn it on and connect the vga cable in it to the video card of your computer. Turn on also the cpu, if the monitor led turn green and the display came out..that fixed it.

2. In case you have successfully repaired the power supply section and the led of the monitor stays green.. then the problem will be in the inverter board section....Turn off your monitor... open the back cover...on the inverter board section.. check and replaced burnt or overheating high voltage transformer..if one or more of this overheats, it is enough to affect the supply current from the power supply section and that may cause to blow your capacitor...If the ballast transformer is working fine the last thing to check is the backlight inverter (the light that illuminate causing display in your monitor) Replace any busted lamp.. that should fix the black screen on your monitor. ..

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This could be a sign that the monitor is failing, but it could also be a very simple solution as well. There should be two cables that come from the back of the monitor - one is the power cord and the other goes to the back of the computer. You will want to disconnect the cable from the back of the computer and then blow out the end with the pins in it (either with a deep breath or a can of compressed air. Now connect the cable back to the computer. You may need a screwdriver to remove the cable and you definitely want to make sure the cable is screwed in after you reinsert it even if it wasn't when you removed it.

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