Question about Dell M990 19" CRT Monitor

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Cable monitor removal

How do you remove the cable monitor? One of the pins is broken on the other end that inserts into the hard drive.

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Re: cable monitor removal

Hi there, removing the cable monitor has a diferent models and brand. some cable just screwing it by your hand both end. and some are connected built in to the screen, if you have this kind of model, you may need some tools and replacement cable for this. simple remove the screw of the monitor at each corner at the back of the screen and see if there is other screw at the back or bottom. then you can pull up the cover the screen and pick up the cable which is connected usally at the small board behind the picture tube which is the CRT Board. then replace the cable with the new one. TY

Posted on Dec 23, 2007

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What to do when your monater says no signal analog

WARNING: Before you start troubleshooting remember that you are dealing with electricity that can KILL. - rules
Test all power and data leads that attach to your hard drive IDE,SATA
the leads from your (motherboard to your hard drive) make sure they have secure dust free connections and are not faulty
if its a 40 pin flat ribbon type it will be the first to fail
make sure all leads that are attached to your drives dvd\cd and floppy have secure connections and are not faulty
even something as small as a faulty electrical fan and its lead can cause you problems
computers need all power and data to continue through every working device and to have an end so any faulty leads will end up with a computer error
Check your RAM.
The RAM is located in the middle of the motherboard.
There are tabs that you can push to release the RAM.
Remove it and put it back in place until the tabs pop out.
Loose RAM can cause your computer not to start properly where you want to see a video signal.
Make sure your graphics card is securely seated with no dust built up or in the socket
if you remove your graphics check the socket to make sure its dust free
Restart your computer then reinstall it this should activate found new hardware wizard
Check the vga lead for secure dust free connection or try another vga lead.
If you have used a desktop computer or have a dual-monitor setup, you have likely seen the "No-input Signal" error message on your computer monitor.
The error message may point to a number of culprits.
Accordingly, the solutions run from simple to complex.
Prior to attempting advanced troubleshooting methods, check the connection first.
Power off the computer and the monitor.
Remove the cable that connects the monitor with the computer, then reseat it.
Try a different port, if possible, then reboot the computer.

Connect the monitor to another computer if possible to eliminate the monitor as the faulty hardware.
Shut down the computer.
Remove all cables and devices plugged into the computer.
Make a note of the port into which your monitor is plugged.

Remove the left side panel when facing the front of the case.
Unscrew screws or manipulate latches to remove the side panel.
This process varies according to the type of case you have.
Please consult your manual if you are unsure of how to remove the side panel.
Attach the antistatic wrist bracelet's clip to a metal object, then ******** the bracelet.
Locate your video card.
(This will be the card that contains the port with which your monitor interfaces.)
Remove the slot cover screw that secures the card into the slot.

Remove any power cables that connect the video card to the power supply.
Pull the card out of the slot.
Examine the gold pins to check for any damage.
Reseat the card if it physically appears to be undamaged.
You should hear a click once the card is secure in the slot.

Screw in the slot cover screw.
Attach the power cable from the power supply unit, if applicable.

Leave the case open for now.
Reconnect only the monitor, power cable and any devices required to boot the computer, then restart the computer.

Shut down the computer again if you receive the "No-input Signal" error message again.
Remove any cables and devices you plugged in to restart the machine.

Remove the video card with a spare or replacement by following the instructions above.
Connect necessary cables and devices to reboot the computer, then restart it.
Shut down the computer and remove cables and devices if the display still won't work.
Unplug the power supply's cables from all devices on the motherboard.
Make a note of each plug-in so that you can correctly connect all devices with the new power supply.

Remove the screws that mount the power supply.
Fit the new power supply into the mounting area, and screw in all screws.

Attach all required power cables to devices connected to the motherboard.
Attach the cables and devices required to start the computer.

Jul 25, 2013 | NEC MultiSync 1770NX 17" LCD Monitor

1 Answer


First thing is to remove the 15pin cable completely and closely inspect the pins inside the connectors. Often these inadvertently are bent when inserting the connector. If any are bent, use a fine pair of strong tweezers to straighten the pins. Once this is done, carefully re-attach the PC and Monitor ends of the i/o cable and boot up your PC.

If this does not work as a solution, reload the monitor driver for your monitor. You can usually obtain that free from the manufacturers website after entering the model number of the monitor.

Good luck


Nov 08, 2012 | Samsung SyncMaster 2233BW 22" LCD Monitor

1 Answer

I have an LG Flatron ez T713SH crt monitor. The display is black and flashing green indicator display appears. What is the possible defect or parts is defective?

A flashing light, with a black screen usually indicates one of about 4 things;

1) The videocard is not functioning correctly, or the cable is plugged into the secondary output on the card (if it has multiple).
2) The cable has become loose, damaged or completely disconnected
3) The monitor has died.
4) Your computer is not starting properly, causing a blank screen

1) Check the cable's connection on both ends, and inspect for any damage (kinks or tears etc.)

2) Take the monitor over to another machine and see a picture comes up. If it does, it's time to suspect the videocard, if not, the monitor is to blame.

3) If you're at this step, it's because the monitor works and the videocard most likely does not.
If you have a standalone card, try;
a) removing it
b) cleaning the gold leads with a white eraser and re-inserting it.
If you do not have a standalone card, or know what that is, move on to the next step.

4) If you're suspecting the videocard, standalone or not, it's time to;
a) remove the RAM from the computer
b) clean the gold leads with a white eraser until it shines and re-insert it
I suggest this because a defective RAM stick can cause a computer to fail to boot. You can also try unplugging all other peripherals, such as the DVD drive and hard drive to see if either of those are causing the computer to fail to boot. Obviously, without the hard drive, Windows won't run, but you'll have discovered that the issue could actually be with the hard drive (however it's unlikely).

5) If none of this worked, try turning the computer on without the RAM in. if there is no beep, your motherboard might have bit the dust.

Lastly, if you're uncomfortable with doing some of the more rigorous/complicated testing, please take the machine in to a professional.

Jul 01, 2010 | LG Flatron Ez T710BH 17" CRT Monitor

2 Answers

Hello, i have an issue where my viewsonic A90F 19" crt moniter's picture dims darker at random...then returns back at random as well. Any idea what it might be? I recommend: | Change Remove Formatting Bold...

If you still have the monitor, check the signal cable -- wiggle it a bit at the PC end and at the monitor end, while watching the image on the monitor. Any change? If you have issues when moving the cable at the PC end, you may want to try shutting down the PC and disconnecting the monitor. Then clean the pins on the monitor's connector with 91%+ isopropyl alcohol and a cotton swab (make sure no cotton is left behind). let dry and try again.

If none of this make any difference, wait for the monitor to go dim. Then, gently smack it on all sides. If the image clears up or changes, there is likely an internal bad connection. Do not open the monitor unless you are familiar with all safety precautions involved.

I have the same monitor and I was having a similar problem. Turned out, there was a cracked solder joint on the signal board at the back of the CRT plus several more questionable ones.

Nov 08, 2009 | ViewSonic A90f (Metallic Black) 19 in.CRT...

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Moniter colour gone pink

Cables do periodically go bad. But If I were you I'd be more worried about a bent/broken pins on the end of the cable. Take a flashlight and shine it on the pins on both end of the cable to see if they have any bent/ broken pins. If you do see a broken pin you will want to check the connectors on both monitors to make sure you don't have a broken connector pin stuck in them. Also  If the broken pins are stuck in the monitors I'd reccomend going to an electronics repair shop to have them fix it for a low price, But this is a worst case scenario. I'd bet its just a bad cable, or the cable just went bad. 
If you don't see any signs of broken pins, then I'd reccomend getting a new cable and a higher quality/heavier duty one.
If its a "VGA"(analog) cable with blue connectors, I would reccomend upgrading to a HDMI or DV(Digital format) I cable if possible. And if thats not doable and you must use VGA for some reason I'd reccomend getting a heavier duty cable from an online shopping site like I personally just got a Rosewill VGA cable and it works perfectly for me. Just make sure you get the correct female-female connector types and also make sure its the appropriate distance. And remember if your getting a VGA(analog cable) the shorter or less cable you need the better, since analog cables degrade over larger distances.  

May 24, 2009 | AOC CT720G 17" CRT Monitor

1 Answer

Replacing the Logic board

OK. Start by remiving the cover, fan, adaptor card and power supply. Remove from the logic board: The hard drive power cable, hard drive data cable and the floppy drive cable. with the rear of the case facing you, release the two tabs with your forefingers while at the same time as pushing on the 120-pin connector with your right thumb. Slide the logic board to the front of the case until it stops. Caution: Be sure the power on/off button clears the rear panel before you lift the logic board out of the case. While lifting the board, do not touch connector J19 or J20. (The oil from your skin harms the connectors.) Gently lift the board out of the case. Replacement Note: Remove the SIMMs from the defective logic board and install them on the replacement logic board. I really hope this helps because it is correct information. If you want to be extra cautious, visit a repair shop instead. Good Luck!

Sep 12, 2007 | Dell E173FP 17" LCD Monitor

1 Answer

Color Problem

In rare instances it is sometimes the 15 pin connector that connects on the computer end. Could be at the monitor end of the same cord, if it is a connector and not hard wired to the inside. Check both possible sides for bent pins.
I once went through an extension cable and had to remove it as it was bad connections and I'd have constant color changes drifting in and out. Sorry, but most likely it is just a cheap monitor on the fritz.

Sep 07, 2007 | X2Gen MG19MY 19" LCD Monitor

1 Answer

Monitor connector bent pin

It is quite easy to straighten these pins, however the pins are quite brittle, and do not suffer bending too many times (they just snap) Does this cable unscrew at the monitor end? if you have straightened the pin on the cable but are worried that it may be a little weak on that end, swap the ends of the cable round and use the other end to plug into your computer (as it will be stronger) Also if the cable unplugs at the monitor end it can be replaced with a cable of the same type, available from most computer stockists, just take the broken cable with you for comparison Gareth

Jul 26, 2007 | MPC Computers Envision EN 5100e 15" Flat...

1 Answer

Screen is not clear ( red color is not there)

Check the cable for kinks at either end. VGA cables that are bent at a 90degree angle for lon periods of time become damaged. The next step is to remove cable from computer and check the pins for damage. A bent pin from accidental force from inserting and seating connector can catch a pin and contact with another pin or ground. If none of these conditions exist, consider monitor replacement. I would try another monitor to rule out the video card as well.

Apr 28, 2007 | LG Studioworks 552V 15" CRT Monitor

2 Answers

Yellow Monitor

Its not something that anyone can do. you'll need to get a new cable and open the monitor to connect it on the inside. to get the vga connector cable you'll need to make the trip to a repair lab anyway, cause its not the generic kind with pins on both sides that you can get in any general computer store. Hope you work it out, and don't get yourself zapped please ;]

Apr 21, 2006 | SAMTRON 78DF 17" CRT Monitor

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