Question about ViewSonic Graphic VG2021m LCD Monitor

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The Screen comes on for 1 second then goes black but you can still faintly see the image on the screen

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It can be as simple as bad DC filter caps (leaking/bulging tops), that will be the first thing to look for, it can be more serious problem in the inverter circuits or bad CCFL assemblies.
http://s807.photobucket.com/albums/yy352/budm/Viewsonic%20VG2021/

Failed TV and Monitors: http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague
Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Posted on Sep 07, 2010

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My viewsonic 19"monitor when you turn the power on it comes on for a second then turns black and the screen says analog
what is wrong with it

Posted on May 01, 2011

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1 Answer

Screen goes black but sound is good.


This sounds like the inverter which powers the display fluorescent has or is failed/failing. If you take a torch to the blacked out display can you see the image faintly? If so the unit needs repairing.

Mar 12, 2015 | Televison & Video

1 Answer

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

Can the lamp be replaced for a Polaroid TLX03210B


You likely have a LCD set there which may likely use a back light inside to light the image, get the room as dark as you can and with a flashlight illuminate the screen from a angle, with set on if you can see the faint image on the screen of the program you have a Backlight issue'

1. Voltage not there or not being switched on for backlight.

2. Actual back light bad.

If the image can be seen with a flashlight one of the above is the issue and your "picture will appear very faintly" also suggests this.

Dec 18, 2012 | Polaroid Televison & Video

1 Answer

Hannspree HF229H will not stay on


railbird56, Common problem for ALL BRANDS of "cold-cahtode-fluorescent-lamp" back-lit lcd monitors! Here are your options!!! Cheapest to most costly!! 1. Warranty repair. 2 DIY repair???? 3. Local or distant repair. 4. possible old + cash swapout with Hannspree for refurbished same model?? 5. Trade-in for new wide screen. My best guess on your monitor (no history) is that the unit's SMPS is in partial or full shutdown mode during it's black screen moments. How much do you know about "electronic ballasts" "switch-mode-power-supplys" and how to repair them?? 12fixlouie

Feb 22, 2010 | Hannspree HW191D LCD Monitor

1 Answer

Acer 22W monitor goes blank after a couple of seconds. Please help.


tjpartners, Have you determined if your display is BLANK, or just BLACK!!! Yes, it can be both! But sometimes if you shine a brite flashlight about 1" from the screen you will be able to see if the screen is only BLACK, but not BLANK because you can still see a very faint image of the Win-Desktop if you look closely. If you see the image then that means the "switch-mode-power-supply" is only in partial shutdown mode and trying to save itself from a catastrophic, nonrecoverable failure! Do the flashlight trick and do a repost to your original message if possible. 12fixlouie

Nov 05, 2009 | Acer Computers & Internet

3 Answers

Screen comes on then goes out in 5 seconds. The backlight goes dark but the seen is working, just can't see it. The backlight is out...


mark587, Did you shine a very bright flashlight 1" from the screen to try and see the WIN-desktop ?? Even though the screen appears BLACK. Your words above said: JUST CAN'T SEE IT Did you really NOT see anything? Have you seen any of the longer video clips of "LCD Monitor Disassembly" on YOUTUBE? Some BLACK screen "symptom" lcd displays can be repaired for less than $10 in parts. Capacitors! Also check videos on lcd repair. Then get back here to fixya and I or any of the guys can help you decide what to do with your display whoose screen is now dark and lifeless. After doing the YOUTUBE thing you may even tell us what you will do!!! Hope this was helpful. Yes we do want to hear back from you. please rate this response on fixya. I'm louie12fix on fixya or lmistyrel @ aol.com. Bye for now.

Oct 07, 2009 | Dell E152FPc 15" TFT LCD Flat Panel...

2 Answers

SCREEN GOES BLACK AFTER A FEW SECONDS AFTER TURNING MONITOR ON.


More often then not, this is attributed to a failing Backlight Inverter. A Backlight Inverter, is a power board mounted below the screen that actually send power to the Lamp inside the LCD itself. Check to see, when it goes out if there isn't still some images faint in the screen. If this is the case take it to a local repair shop and have them order one and replace it. repair cost for this shuold be around 65-100 dollars.

If this helps, please rate my solution. Have a great day.

May 16, 2009 | Acer AL1715 17" LCD Monitor

1 Answer

Syncmaster 226bw goes black


If you can still faintly see data on your screen, it will be a faulty backlight in the panel most likely.

LCD panels have fluorescent tubes in them that provide the light needed to see the data. If one of these goes faulty, the circuit that drives it will turn off ALL the backlights, giving you a black screen.
Note: a faulty circuit that drives the backlights will often give the same apparent fault.
You will need to take the monitor in for repair.

Jun 23, 2008 | Samsung SyncMaster 214T 21.3" LCD Monitor

1 Answer

Good picture for 30 seconds then screen goes black with a faint ghost of the image


the 12V is for speakers.. the 245bw takes regular 120V AC (same cord as your computer)

the buzzing is annoying, though. i don't know if it's a "feature" or just a side effect.. ie, if i could take the case off and poke around, i would. 4 times out of 5 it's some dumb piece of tin reverberating from a transformer or something..

Dec 03, 2007 | Mag Innovision LT576s 15" Flat Panel LCD...

3 Answers

Good picture for 30 seconds then screen goes black with a faint ghost of the image


i hope the problem will be in LOT of the monitor...you need to replace the LOT

Jun 14, 2007 | Mag Innovision LT576s 15" Flat Panel LCD...

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