Question about Hyundai ImageQuest B90A 19" LCD Monitor

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Case removal My B90D Monitor has a loose connection at the power plug on the back on the unit. I need to find out how to seperate the case to repair the connection.

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Re: Case removal

Usually a 'Snap together' operation Be craeful now - dont break a tab and be aware of high volts

Posted on May 22, 2007

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Elo 1515L touch monitor. How do you open the case? There are no visible screws.


These are a major pain to open. The case halves are held together by tabs and notches all around the perimeter of the case. They are very hard to get open without scuffing the case up a bit. The easiest way to do it is with 2 small flat blade screwdrivers. You will need to insert the first one between the two halves by pressing very hard to even gently tapping the screwdriver with a small hammer. Once one is inserted you will use the other one to work around the case and pop the other tabs loose. It will take some patients to open these, they are not really designed for user serviceability. It sounds like you are having issues with the unit. The most common problem with these units is the capacitors in the power supply causing the units to not power up. Look for bulging tops, if you find any then its best to replace them all since the case is so hard to get back into. We repair these units in our service department all the time. Here is a link to our web page talking about capacitors and what to look for. If you don't want to do the repair on your monitor we can do it for you. Here is a link to our service request form if you need it:

Sep 06, 2011 | Elo 1515L (Grey) (Dark Gray) 15" LCD...

1 Answer

I have tried to open the case of ViewSonic VA1930WM LCD monitor. I have removed all visible screws and released all clips around the side. However only the front "frame" releases and is loose...


These units are more of a challenge to get open than most monitors. Here are the steps:

remove all cords - power, VGA/DVI speaker
remove stand - pull off hinge cover and then remove 4 screws
2 screws at bottom corners of case.
Now comes the fun part.
On the bottom edge there are 2 slits on on each side of the monitor about 3-4 inches in from the side. Use a small flat bladed screwdriver inserted in this slot to pop the two halves apart. Once you get a small gap just work your way around the entire monitor until the case halves are released from each other, but don't pull them apart yet. When opening most monitors the front comes off first but on this one the back case comes off first. You will need to again use your flat blade screwdriver inserted between the two case pieces and under the LCD panel and gently apply pressure. At the same time you will need to pull one end of the back case away from the panel, there are two plastic catches on each end that hold the panel inn the back case. One end will release then the other sould come right out so you can remove the back plastic case from the electronics. Now to get to the electronics you will need to remove the two screws on each end of the panel that hold the metal RF shielding in place. Also there is a screw in the center at the bottom of the panel that will need to be removed. Next unplug the 4 backlight power plugs. Slightly lift the shield so you can get to the flat ribbon cable going from the driver board to the panel. It will unplug from the panel by pressing in on the two release tabs, one on each end of the plug. Now you can get to the electronics. I am guessing you are having power issues with the unit. Check here for power supply repair kits if you need to get parts for your unit.

I hope this helps you get the case off, if so please rate my solution.


Aug 04, 2011 | ViewSonic VA1930WM LCD Monitor

2 Answers

I just hooked up this monitor princeton monitor VL SERIES vl1918 it is flashing off and on. Help please

There is an electrical problem with either the power cord connected to the monitor or the outlet that it is plugged into.

If its a brand new monitor, return it to the place of purchase and exchange it.

If its a used monitor then I would suspect that someone has given you the wrong power cord for the unit. Sometimes people check to see which cord "fits" the unit and think that its appropriate because they can connect it.

That is not correct when it comes to monitors. Just because a power cord fits by connecting to the monitor does not always mean its appropriate to run it correctly.

Check the voltage requirements on back of the monitor and compare them to the power cord your using with it. If they are appropriate and your still experiencing this problem then the power cord might be bad.

Test this possibility by disconnecting the monitor from the computer and turn it on. Do you see a screen that says "no video" or "no connection"? Does the screen blink the same way as when connected to the pc? If it does, then its the power cord or supply source its connected to. Plug it into another socket and and see if you get the same thing and that tells you its the cord.

If the display is good when not connected to your pc, then use a process of elimination to figure out if its the monitor cords connector that is broken or frayed or if its the video card connection that is either loose and needs to be re seated in your case or the connection itself is unsturdy and needs the bolts tightened to give a solid connection.

How do you do that?

Check the pins on the end of the cable that connects the monitor to your pc. Are any broken, missing or bent?. Check the other end that connects to the monitor and verify the same thing.

Then try and jiggle the video card by grabbing the area that you connect the monitor cable to on the back of your pc's case and see if it is loose. If it is, get a screwdriver and tighten the screws until its tight.

Try plugging it in again and see if this solves your problems. If it doesn't then clarify your findings and I will help you solve this issue another way.

Sep 27, 2010 | Princeton Digital VL1918 Monitor

1 Answer

I have a viewsonic vx1940w Monitor which will no longer power on. I'd like to take the back off and see if there are any loose connections but there are no visible screws. Does anyone know how to open it?

There is no exact instruction, but first thing you have to do is to remove the stand, then starting at the bottom edge of the case using thin flat blade screw driver to pry open the case up and then work your way around the case, you can also look at YOUTUBE, just search for 'how to repair LCD monitor', 'How to open LCD monitor'
Bad caps (leaking/bulging top) are common failures.

May 15, 2010 | ViewSonic VX1940w LCD Monitor

1 Answer

My acer moniter comes on but wount stay on it cut back off

Shut down computer and monitor. Unplug the monitor from the computer. Plug it in again making sure it is connected firmly and that the connection in the back of the computer (video card) is not loose or shaking.

If the symptoms persist and the card appears loose (can happen on older computers) you might need to open the computer case, unscrew and remove the video card and then reinsert it making sure it is firm and attched.

Dec 23, 2009 | Acer AC713 17" CRT Monitor

1 Answer

How do I open it to look inside?

First, lay the tv/monitor on its screen on something level and soft as not to damage the screen. Remove any visible screws that seem to attach the base to the unit. Some models you have to look under the base for pins orso to push together to slide the base from the stand, only then you could reach the 1 screw holding the monitor to the stand....Once stand removed, remove any screws you see holding the monitor casing together, usually only a few screws since they are mostly held together by plastic "clips"...Once screws are removed, then gently insert a flat(screwdriver orso) inbetween the case?housing, repeat this all the way around the case/housing till completely loose....You will prob have a few wires or maybe a ground wire that you would have to remove before completely being able to seperate both sides(front case, back case)..Sometimes you might have to unscrew and remove the skinny washer/nut around the cable input orso..
Good luck!

Nov 18, 2009 | X2Gen MG19MY 19" LCD Monitor

2 Answers

The AC plug seems to be loose inside the monitor. When I wiggle the ac plug around sometime it stays powered on and sometimes it powers back off. I think it has something to do with the ac plug being loose...

have it check, or might be better have it replace, any connection regarding electric current supply should be tightly connected, if it is loose, it might cause some serious problem like short circuit or even worse is FIRE, just bring it to the technician and have it change, also with your power switch

Nov 05, 2009 | HP f2105 21" LCD Monitor

1 Answer

Dear.. my LCD is no power veiw,i turn on the lamp on LCD is yellow color then after 2 seconds the color will be change oren how my email

Hello there:
This is usually not a good sign
I will give you a couple of things to try out first ok
(1) you may want to try the monitor on a seperate computer to see if it will work if not than the monitor needs to be repaired.
but if the monitor will work on a seperate computer than this just means that your video card on your computer is either loose or it is not working to test this try these steps
you can try to remove the power cord and open the case and remove the power supply cord that goes to the motherboard than press the power button of the computer for 15 seconds and than if you have a reset button press this button for 15 seconds than plug the power supply cord back into the motherboard and try to reboot the machine and see if this will work if not try this
(2) with the computer unplugged remove the video card and clean the gold edge with rubbinbg alcohol and let dry than reinstall than reboot the machine if still nothing than you will have to get a new video card.
*** NOTE*** if your video card is built to the mother board this is a common thing cause they dont last forever so just get a new video card and install and connect the monitor to that one and not the old one ok?
so please try these solutions and you should be all right
best regards michael.

Oct 23, 2009 | Sceptre X9G Komodo IV 19" Flat Panel LCD...

2 Answers

Compaq FP 5315 Monitor Disassembly

This is how I did it.

1- Remove the four screws in the back of the monitor. Two are in the bottom corners and two more near the bottom center ( these hold the stand in place).
2- Remove the stand.
3-The case back is held on by the four screws and a number of plastic pressure clips. After removing the screws: using a fairly wide flat bladed screw driver; insert the blade in either of the two slots on the bottom edge of the case and twist with medium force. This begins the seperation of the back from the rest of the monitor. As the crack widens, begin moving the blade of the screw driver along the widening crack (around the case edge) and twisting gently. This releases each pressure clip in turn. Separate the case back from the rest of the monitor.

I did this this way with my monitor. It works.
Good luck.


Dec 02, 2006 | Compaq FP 5017 15" Flat Panel LCD Monitor

5 Answers

Xerox XG-91D 19 in. Flat Panel LCD Monitor

Just tore mine apart so here is some help. You need to remove the two screws on the back of the case on the bottom. Then you remove the front cover it slides toward the top of the screen then lifts off. You can pry it off if that doesn't work. If you want to seperate the screen from the back cover you then need to remove the swivel mount and the other two screws from the back cover.

Oct 06, 2006 | Xerox XG-91D 19" LCD Monitor

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