Question about CTX S761 17" LCD Monitor

3 Answers

My monitor appears to have died. It seems to flicker on once every two seconds, just long enough to see there is indeed something displayed. Is there something simple i can do to fix this or should I

My monitor appears to have died. It seems to flicker on once every two seconds, just long enough to see there is indeed something displayed. Right now I have it hooked up to my laptop, but yesterday when i went to turn on my computer the monitor started doing this. It seems to be a problem with the power...the cable or an internal power problem? Is there something simple I can do to fix this or should I just toss it?

Posted by Andrew Vaught on


3 Answers

Paul Phillips

  • Level 1:

    An expert who has achieved level 1.


    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 6 Answers

This series of monitor has a bad habit of destroying it's capacitors. I have fixed two S762G monitors (almost the same as a S761) by replacing 2 bulged capacitors on the motherboard with new ones. They cost me 50 cents each (plus shipping of like 3 bucks) from Didn't carry them at my local Radio Shack, but they did have them on the shelf at my local Fry's. (about the same price as digkey if you include the shipping costs.)

I would look for any capacitors on the mainboard that have their aluminum disc top bulged up. That's a sure sign of a blown capacitor. Anyone with good soldering skills can replace those for you. (making sure to put them in the right direction for their polarity, and getting the correct rating/voltage/temp) The two caps I had to replace on my S762G's were C21 and C22 and they were both 1000uF 16v 105c high temp radial electrolytic capacitors. Make sure you get the exact same specs for your replacements as from your originals.

The typical symptom of the blown capacitor on this monitor is that it will power on a few seconds, showing the screen properly, then make a slight pop and the power light will go off, then it will come back on again, and do it over and over. Sometimes they will "Warm up" after a while and stay on, but that will only work for a short time (typically under a month or two). After that, the capacitors will be fried and need replaced anyway. Best to fix them right away, to prevent possible damage to other components.

The difference between this symptom and a typical inverter board failure is that the monitor will power cycle repeatedly. Inverter failures usually show up as the backlight only turning on for a second or two showing a good display, then going off and staying off until the monitor is manually power cycled, and if you look really carefully under good lighting you can still make out the display with the backlight dead.

Hope this helps someone...

Posted on Dec 13, 2008



  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

This display was assembled using cheap shoody parts that fail after a short predetermined time. replace all the lytic caps with quality lytic caps rated for 25 volts or higher if you want the display to last ( the stock caps are all 15 volt rated ). This is common for all current east asian electronic ****. TV's and Motherboards all suffer badly due to these caps

Posted on Mar 17, 2009



  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 432 Answers

The LCD inverter board maybe going bad and will need replacing. You can buy one on ebay under $100. Cheaper than what it would cost to get this fixed. Try this website:

Posted on Jun 22, 2007

Add Your Answer


Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Display starts out OK, but after a few minutes it begins to flicker in the upper corners, and the turns on and off a few times before staying black?! Everything else seems to function OK.... BIOS issue???...

please check the monitor or LCD that you have. because the computer will not flicker if there is a problem on the display. isolate it. use other monitor or LCD then check if it flickers again.

Jun 27, 2010 | eMachines W4685 PC Desktop

1 Answer

Black screen with a flicker`


I sounds like you have a power supply that is going out. If you are able to open the unit and feel comfortable enough to solder parts I may be able to talk you thru a repair. May type of monitors have issues with power supply capacitors going bad and causing the exact problem you describe. The unit will power up for 1-3 seconds and then no display, sometimes the power light will stay on sometimes it will just blink on and off. If you want to try the repair email me at [email protected] and I will help you, we also have a repair service and can do the repair for you if you are interested. I hope this helps.

Jun 16, 2009 | LG Flatron L1951S 19" LCD Flat Panel...

1 Answer

Screen slightly flickers

Probably the inverter board of your monitor has been exhausted. The inverter is the part that enables the monitor to glow, making a little fluorescent gas lamp insithe the LCD bright strong enough to illuminate all the panel. When this circuit has some disfunction the lamp could oscilate, ficker and finally die making the panel dark and you couldn read what's on the screen.

The inverter has a lifetime, and the lamp too, check the lamp lifetime of your monitor and the inverter too.

But this could only be performed to a qualified person, due the high probability of electric shock if you try to make yoursel the repair.

Good luck

May 23, 2009 | Sceptre X5G-Komodo IV 15" Flat Panel LCD...

1 Answer

Screen goes blank after a few seconds

Hi ,
The monitor flicker problem. The monitor when turn on will display image for couple of second then turn black. The monitor status led is still green. This will happen each time it is turn on. The symptom at appear to come from the inverter board.

May 08, 2009 | NEC-Mitsubishi NEC Display Solutions...

1 Answer

No voice to Garmin Nuvi 660

In case it is a software problem try this and see if it will fix it......follow these steps.
1. Power off the unit.
2. HOLD down the power button and you will see "Pre Boot Mode" appear on the lower part of the display. KEEP HOLDING the power button down and the display will flicker, do this until the pre boot mode message disappears. This seems to take a long time (60 seconds at least).
3. Once the pre boot mode message disappears release the power button and your device will perform some activites to try recover from the problem.

Jan 17, 2009 | Garmin Nuvi 660 GPS Receiver

2 Answers

Samsung SyncMaster 243T blacklight

indeed, probably the backlight...
Nothing to do about that but repair or replace, sorry...

Nov 13, 2008 | Samsung SyncMaster 243T (Black, Silver)...

1 Answer

Erratic display

it sounds like a blown cap.. you can replace it if you know how to soder

Jun 11, 2008 | Gateway FPD1960 19" Flat Panel LCD Monitor

1 Answer

173v flat lcd black screen

I've had a similar problem with my 173v monitor since I bought it a few years ago. When I start my computer, Mac or PC (I've connected it to both), the screen remains black and the green power light flickers once a second, almost like it's twitching - it's different from the blink it makes when the computer isn't turned on but the monitor is. Like kronem, I have to unplug the line from the monitor to the computer, wait for the monitor to register no input, and then plug the monitor in again before it displays anything. I've never figured out a way around the problem - I hate it!

Feb 21, 2008 | Samsung SyncMaster 173V 17" Flat Panel LCD...

1 Answer

Flickering monitor attached to notebook.

doe syour lcd screen have pc input or dvi > also in your nvidia control panel u nee dto tell it add 720 p tv outto display manger always 60 hertz try differt resultion 1024x 768

Jan 10, 2008 | SPARKLE Computer GeForce 6600GT, (128 MB)...

4 Answers

Monitor flickers!!

I have also same problem with LG Monitor 700E, LB(in). I want circuit diagram/systematics of this monitor in PDF or any other format. Thanks in advance.

Dec 01, 2007 | LG Studioworks 700S 17" CRT Monitor

Not finding what you are looking for?
CTX S761 17" LCD Monitor Logo


Ask a Question

Usually answered in minutes!

Top CTX Computers & Internet Experts

Lee Hodgson
Lee Hodgson

Level 3 Expert

4810 Answers

Michael Thomas
Michael Thomas

Level 3 Expert

3056 Answers


Level 3 Expert

85239 Answers

Are you a CTX Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides