Question about Computers & Internet

2 Answers

Clarity bobcat monitor, no picture black screen

Unit has black screen will not show picture. A co worker was able to get the unit to work for a couple of hours prior to it returning to a black screen.

Thanks,
Dan

Posted by on

  • OCboss Mar 13, 2008

    I seem to have the same problem. Hava you found out what it was?

×

2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 286 Answers

This is a generic symptom that could happen to any LCD monitor.
The following is a generic answer applicable to most.

Two possible causes are bad capacitors or a bad light inside the LCD panel.

Open the unit and check to see if any of the capacitors in the power supply or other boards look domed or vented on the top.

Replace any capacitors accordingly. Use the same value capacitors. Most often, 1000uF 16V or 25V, 470uF at 16 or 25V, 220uF at 16V or 25V.

If this doesn’t solve the problem, try checking the surface-mount transistors on the inverter board that run the lights. Some times these transistors go bad. Check the area for any cracked or overheated ceramic or mylar capacitors.
Also, you may have a bad light inside the panel. This is tough to test without a spare light to use for troubleshooting.

You can take the panel apart and inspect the lamps but it is very tedious. It's tough enough to get them apart and back together again never mind keeping the layers clean. You have to try not to get any dust between the layers or you will see it in the picture.

There are usually two light fixtures each of which holds two lamps. One fixture is at the top and one at the bottom. Remove them one at a time and inspect the lamps to see if any are broken or very dark on the ends. If one looks out of place, it could be bad.

You'll have to find replacement lights on the net. It's not easy to replace them, but if you've gone this far, good luck. You should be able to get generic instructions off of the site that sells the lamps.

Posted on Feb 14, 2008

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

HP f1503 flat screen monitor remains bland when i turn it on, though the monitor light shows it is on. I can shine a light on the screen, and see that it is working, but not bright enough to see.

Posted on Jul 20, 2008

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

2 Answers

ET183105 PC Desktop black screen


Either your monitor or video card is bad. Try connecting another monitor to the computer. Borrow a monitor from a neighbor, friend, relative or co-worker and connect it to the computer. If the Borrowed monitor displays and works, then your original monitor is bad. If the Borrowed monitor does the same as your original monitor and does not work, then the Video Card inside the computer is bad.

May 19, 2012 | eMachines ET183105 PC Desktop

1 Answer

HP pavillion dv9000 has black horizontal lines across screen and looks like a snowy background


Sounds like the screen is going bad. Isolate the problem by plugging an external monitor to the laptop. Borrow a monitor from a neighbor, friend, relative or co-worker to plug to the laptop. It can be any kind of monitor even the old big fat crt monitors as long as it has a vga cable to connect to your computer's vga port. If the Borrowed monitor does not show the black lines and snowy background, that proves your video card is ok and the problem is your lcd screen. If the borrowed monitor shows the same black lines ans snowy background it means your video card inside the computer has the issue.

The video will show on most systems when you reboot without you having to do anything. Some systems will require you to hit the FN (Function key) + F1 thru F12. Hold down the FN key then hit the correct key for displaying on the monitor (F1 thru F12). The correct key will normally have CRT/LCD on it or it will have the icon of a display.

May 18, 2012 | HP Compaq Business Notebook nx7000

1 Answer

Black screen after changing resolution


Try setting your resolution back to the way it was and see what happens.

Maybe your monitor or video card is bad.

To isolate the problem try connecting another monitor to the computer. Borrow a monitor from a neighbor, friend, relative or co-worker and connect it to the computer. If the Borrowed monitor displays and works ok, then your original monitor is bad. If the Borrowed monitor does the same thing as your original monitor, then the video card inside the computer is bad.

May 18, 2012 | Dell Computers & Internet

1 Answer

Black bar on right side of screen


Sounds like the screen is going bad. Isolate the problem by plugging an external monitor to the laptop. Borrow a monitor from a neighbor, friend, relative or co-worker to plug to the laptop. It can be any kind of monitor even the old big fat crt monitors as long as it has a vga cable to connect to your computer's vga port. If the Borrowed monitor does not show the black bar on the right side of the screen that proves your video card is ok and the problem is your lcd screen. If the borrowed monitor shows the same black bar on the right side of the screen it means your video card inside the computer has the issue.

The video will show on most systems when you reboot without you having to do anything. Some systems will require you to hit the FN (Function key) + F1 thru F12. Hold down the FN key then hit the correct key for displaying on the monitor (F1 thru F12). The correct key will normally have CRT/LCD on it or it will have the icon of a display.

May 18, 2012 | Alienware PC Systems Computers & Internet

1 Answer

My sony vaio d screen sometimes go black


Sounds like the Monitor or Video Card might be going bad. Try plugging another monitor on the computer to isolate the problem. Borrow a monitor from a neighbor, friend, relative or co-worker and plug it into the computer. If the Borrowed monitor works without going black, then your original monitor is bad. If the Borrowed monitor goes black like your original monitor, then your video card is going bad.

May 15, 2012 | Sony VAIO VGC-LS30E 1.73GHz Pentium Dual...

1 Answer

Black screen just after boot window from USB


Sounds like either the monitor or video card inside the computer is bad. Try connecting another monitor to the computer. Borrow a monitor from a friend, neighbor, relative or co-worker and plug it into the computer. If the borrowed monitor displays ok, then your original monitor is bad. If the borrowed monitor does the same thing and not show a display then your video card inside the computer is bad.

May 09, 2012 | Computers & Internet

1 Answer

No data in panel


Either your monitor is bad or the video card in the computer is bad. To isolate the problem try another monitor on the computer. Borrow a monitor from a neighbor, friend, relative or co-worker and plug it in the computer. If the monitor works and shows the display then your original monitor is bad and needs to be replaced. If the borrowed monitor does the same thing and does not show anything but a blank screen then the video card inside the computer is bad.

May 08, 2012 | Computers & Internet

1 Answer

What's your problem?the screen turns very dim to where you can barely see the picture


Your monitor is going bad or your video card is going bad. Try using another monitor on the computer to isolate the problem. Borrow a monitor from a neighbor, friend, relative or co-worker and see if you can barely see the icons and desktop on it. If the borrowed monitor is bright and clear and you can see things ok, then your original monitor is going bad. If the borrowed monitor shows the same problem of barely being able to see things, then your video card in the computer is bad.

May 06, 2012 | HP Pavilion Slimline s3600t Desktop PC

1 Answer

No power to vx2235wm. How can I fix it?


Black screens or no pictures are usually caused by a failure in the back light power supply. Many times the monitor is working but with the back lights not turning on you can't see the display. Here is a link to a repair guide that will show you how to open the unit and what to look for and replace to rebuild the power supply and bring the unit back to life.

http://www.ccl-la.com/blog/index.php/repairing-the-viewsonic-vx2235wm-lcm-monitor/

I hope this helps, if so please rate my solution.

BuddyMc

Dec 07, 2011 | ViewSonic VX2235WM Monitor

1 Answer

I have a gateway FPD2485W tft lcd monitor and i start my monitor and after it shows gateway it then goes black. How can this be fixed


bonannorl, Maybe it can be fixed. You did not give any history of unit. Only "now" stuff. Is unit covered by Gateway warranty? How old is unit? Date of manufacture? Did unit work fine connected to your pc and this black or black n blank screen thing suddenly happen? Is screen also BLANK? Have you swapped-in old monitor to prove PC is OK? Your CCFL back-lit lcd monitor no different than any other brand in it's basic design and operation. Get into my fixya profile and read some of my testimonials and solutions to black or black n blank screen problems to help in your decision to DIY fix or contract out needed repair work. Most likely 2485w has problem with it's internal "switch-mode-power-supply"/"ccfl inverter supply"!! Let me know more info about unit.
12fixlouie on fixya.

Mar 09, 2010 | Gateway Computers & Internet

Not finding what you are looking for?
Computers & Internet Logo

Related Topics:

1,062 people viewed this question

Ask a Question

Usually answered in minutes!

Top Computers & Internet Experts

Brian Sullivan
Brian Sullivan

Level 3 Expert

27725 Answers

kakima

Level 3 Expert

102366 Answers

David Payne
David Payne

Level 3 Expert

14161 Answers

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

Answer questions

Manuals & User Guides

Loading...