Question about Rosewill MNTR |LCD 19' 8MS DVI R912E Monitor

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Monitor image comes up, then blacks out, power still on

It appears to be temperature related, when the room is very cold, and the monitor has been off for longer than 30 minutes, an image will not come back up for longer than 1 second.
There doesn't appear to be any hardware problems with my tower, just the monitor. The system works fine, when I can actually get an image out of my screen. I turn the monitor on, the image appears for 1 second, then goes black, with the power light still on. I turn the monitor off, then on again, and the cycle repeats. Once the monitor "warms up," (warming up takes about 30-45 minutes of powering on and off) I have a perfectly good image and all programs and software run normally. As soon as I shutdown or power-down the monitor for more than 30 minutes, the cycle starts over. Is the monitor just approaching the end of it's life or is there something obvious that I can hopefully do to fix this?

David

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Hello David,

This is very common problem and is heat/age related, but It can happen to monitors that are no more than a year old. It is usually bad capacitors on on power inverter board. I just fixed two monitors with this problem. This problem is common across all brands. Look for several radial capacitors in a cluster on the power inverter board. If some are bulging or have a slightly domed top, they are the ones that are bad. I usually replace all the capacitors in this small cluster because some may be marginal. This is easy to do if you have a bit of electronics skill.

Posted on Dec 27, 2008

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I have lenovo g550...my screen flickers in every 5minutes...


Failing Inverter An inverter, typically found inside a laptop computer, consists of a small board, which has impregnated electronic circuits stamped on it. Inverters look like thin boards about the of two sticks of chewing gum. The inverter and its bulb control the intensity of the liquid crystal display, which lights the screen monitor. The computer can control the output voltage of the inverter and either lighten or darken the screen. A special type of inverter can adjust the brightness of the screen by using an internal sensor to judge the room brightness, and then adjust the screen accordingly. Failing inverters give off some specific warning signs, which can be recognized by observing different screen characteristics.

Short Intermittent Display Upon turning on the laptop, the screen flashes on in the normal mode for a short period and then blinks to black. A very faint image appears in a dark background, which will be very hard to see almost invisible. After shutting off the laptop and restarting, the same mode occurs, where the screen appears normal for a few seconds then fades to black. This condition points to a failed inverter. To confirm this, plug in an operational external monitor; if the external monitor functions, the inverter has failed. b> Total Blackout with Ghost image b> The laptop turns on, as indicated by the power supply button, but the screen comes up black. The screen comes up black after restart. You might be able to detect a very dim or ghost-like image on the monitor. When you plug in a known functioning external monitor, the external monitor operates normally. This mode of display indicates a failed inverter. b> Long Term Periodic Operation b> With this failure mode, the laptop screen illuminates normally upon start-up and remains that way after several minutes, hours or even days, until it goes very dark again. Brightness controls or restoration attempts do not work. Most often, the screen will function normally with a computer restart, but will eventually return to black. Faint ghost images might appear, as seen in the total blackout mode. b> Dark With Color Variation b> Upon computer start-up, the monitor shows black or dark gray, accompanied by very faint images. The screen might have an intermittent color change, or remain on with a non-standard color variation, like pink or red. b> Auto Control Switch b> If the screen appears black, with no faint or ghost images, look for the lid switch near the back hinge. The switch, when depressed with a closed lid, shuts off the computer and monitor functions. Sometimes the switch becomes stuck in the closed position, disallowing the computer and monitor to turn on when opened. Pushing the switch manually several times can often free it up. If the switch tab has broken or jammed inside the case, it needs replacing. b> Loose Connection In this mode, the display looks normal upon start-up, but tapping the side case of the computer turns the screen black. More tapping results in the screen functioning normally then cutting out again. This condition points to a loose wire connection from the inverter to the LCD backlight lamp, or the video cable. The connectors can be accessed by removing the monitor bezel screws and pulling the plastic retainer off. Both connectors can be cleaned and refitted.

Feb 10, 2013 | Lenovo G550 PC Notebook

1 Answer

It doesn't show the image from computer, the screen still black but the power light appears on.


Connect another monitor to the PC and confirm that the PC is working , specially the display drivers/card. If so the fault is only with the monitor and it can be related to power supply issue, a backlight inverter circuit shorting or a fault in the main board., all of this mightt require a good probe with the use of manual. So please check this out and confirm if the fault is with the monitor or the PC.

Oct 18, 2011 | IBM ThinkVision L170p 17" LCD Monitor

1 Answer

Toshiba satellite P505-S8980 laptop "A


Solution 1) Set the system cooling policy to "active"
Windows has two approaches to fan control - "active" or "passive". The default option is passive, but if you switch it to active instead then the fan will turn on more frequently. You can do this by following these steps:
  1. Left click the battery icon in the bottom-right corner of the screen (See image)
  2. Left click More power options (See image)
  3. Click Change plan settings next to the Balanced power settings (See image)
  4. Click Change advanced power settings (See image)
  5. Click the + next to Processor Power Management (See image)
  6. Click the + next to System Cooling Policy (See image)
  7. Change Passive to Active for both Plugged in and On battery (See image)
  8. Do the same for any other modes you use, such as power saving mode
  9. Restart the computer

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Solution 2) Keep Toshiba PC Health Monitor open
Some of the comments below sing the praises of PC Health Monitor. Apparently, the laptop fan will work harder when PC Health Monitor is open.
PC Health Monitor is already preinstalled on Toshiba computers. To open the program, just press the Windows key to open the Start menu, start typing "PC Health Monitor", and the program should appear in the search results. Click on it to open it.


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Apr 07, 2017 | Computers & Internet

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Monitor has power. Will come on very briefly and the go to black screen. Can turn power off and back on and get the same above result.After a 2-3 hour period may come to life...may not.


It appears as if the monitor's back lighting is failing. To test the theory, take a bright flashlight and shine it on the lcd monitor screen when it goes black. If you can see the images that were on the screen before it went dark while shining the flashlight on the screen, then the back lighting is failing. Depending on the monitor, it could have florescent or L.E.D. back lighting, but it's usually more economical to simply replace the monitor with a new better performing monitor, than to attempt repairing the back lighting on the failing monitor.

Dec 01, 2010 | Samsung SM225BW 22 inch LCD Monitor

1 Answer

Monitor comes on but then shuts off in about a second


Try reducing the resolution (boot at safe mode)

Stelios.

Feb 22, 2010 | Dell UltraSharp 1908FP Monitor

2 Answers

No image on the monitor


Hello,

It sounds like you have a monitor with a common problem. After a few years some LCD monitors will blow a power supply. The problem is caused by parts called capacitors overheating in the confined space of the monitor. If you are good at electronics repair/soldering you can usually fix the problem. Check out a few pictures on my web site www.ccl-la.com/badcaps.htm You can take the back cover off your monitor and look for the bad parts,replace any that look like the pictures and your monitor should work fine. The capacitors do need to be installed with the correct + and - connections, note the stripe on the old one and insert the new one the same way. If you don't want to try the repair yourself we offer a repair service for $35 plus shipping.

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

Buddy
Corporate Computer
www.ccl-la.com
Over 21 years of computer and printer support/repair

Jul 17, 2009 | Acer AL1916W 19" LCD Monitor

1 Answer

LiquidVideo L17LCD2 17 in. Flat Panel LCD Monitor - Power Issues


firstly stop turning it off and on because you will blow something else like a power board then it will be a big paper weight.
next get a torch and when it is powered on and supposed to be showing images, shine the torch at the screen.
if you can see everything then you have a broken backlight or problem with your backlight and connections.
they cost approx £15 and a little labour, its not a big job. you may be able to do it yourself if you can get hold of a service manual.

Feb 26, 2009 | Liquid Video L17LCD2 17" Flat Panel LCD...

1 Answer

Monitor keeps blank even the power lLED is on green


Try replacin a new display card. If it is fine working.ok
If not try fixing for cold solder in the video section.
I suggest video section according your report the light green LED lighted that shows the power section is doing fine.

Apr 22, 2008 | Proview PL913S 19" Flat Panel LCD Monitor

1 Answer

Shutting off


It may not be related to room temp, but it sure sounds like there is an internal problem relating to temp. Meaning, there is a component (probably a capacitor) getting over heated or leaking. If this is still covered under the mfg warranty, I would contact them to get it fixed. If not, then taking it to a repair facility that can repair it is probably a good idea.

Aug 17, 2007 | Acer AL2017 20" LCD Monitor

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