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Keeps blinking out to a black screen

Hi i have a sceptre 19" lcd and it jus started to blink out. I am using it and it jus goes out but power light stays on. I turn it off then on and it is fine. Now its worse it blinks out and i turn it off then on and it comes on for a second and blinks back out to a all black screen. Any ideas whats doing this its just over 2 yrs old.My email is
justjacob19@hotmail.com

thanks!

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  • jacobnunya Oct 25, 2007

    hi thanks for the detailed explaination. i  hooked it back up today and once again its working as it has before ,last time it worked ok for about a week then started blinking out.the heating problem is what i was thinking it might be when it happens again i will give it the flashlight test to see if its the backlight. I will keep you posted and thanks again.

  • Anonymous Dec 11, 2007

    yes, having the same problem. The screen blinks off and on. The power light also blinks on and off.

  • kdouang Jan 04, 2008

    Yep, I'm also having the same problem. The monitor is less than 1 years old.

  • Anonymous Mar 07, 2008

    Me too. My IBM T221 LCD (AKA Viewsonic VP2290b) starts blinking out after ten minutes, and goes to steady black for an hour, then comes on and works fine all day. Maybe heating up is involved. Plan to try the flashlight test tomorrow, hoping for a simple backlight-related fix, but I fear I might be into the long poke and prod process otherwise. I can't let this monitor die, because it is the best monitor ever made. Like, 3840x2400 resolution.

  • scottlynnd1 Mar 15, 2008

    I have the same Display (Sceptre X9g- naga or some such B.S.) and it just started blinking on and off after I installed windows vista on one of my drives. I thought maybe it was something wrong with the installation but when I reinstalled my old OS it was still doing it --of course I blamed Vista and jumped up and down cursing microsoft etc. I have switch video cards, made sure everything is tight and all the normal troubleshooting tricks I know. I am afraid it seems to be the monitor, but I am hoping its just a driver; what do you think.



    P.S. Do me a favor and go to Scepter site and check out the support page before you comment; you get a laugh.

  • edconto Jul 27, 2008

    i have a sceptre 30" LCD TV. When I turn the TV on, I see picture for about 1 second, then the screen goes out (black). I still get sound. If I turn the TV on/off several times, the picture will eventually come on and stay on. Another way I get the picture to turn on and stay on is to repeatedly change inputs on the tv. When I change inputs, the screen will light for 1 second, then go out. After changing inputs several times, the screen will come on and stay on. The problem seems to only occur when the TV is cold, and hasn't been on for several hours.

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Hi,

If the power light stays on and the unit works even if for just a moment, then chances are that you either have a cold solder, or a heat problem with some components or your CCF Lamp is starting to fail.

All possibilities require that you open your LCD monitor and perform diagnostics of the components/circuitry inside. This of course would require that you be familiar with components, circuitry, soldering and the use of a VOM.

Cold solder - refers to soldered connections that have lost 100% of their connectivity. When the unit is jarred or after some time of use it looses completely its connection. The corrective measure require that the said cold solder be located and resoldered.

Heat problems with some components - the most often are power capacitors. These are can types rated something like 470uF/16V.  When power is applied and heat starts to build up, they start to looses their capacitance and therefore can no longer hold a charge.  Most cases, there are physical evidences such as blistering, brownish leakage at the top or at the bottom, swelling or gaps at the X/Y indentation at the top.

CCF Lamp - may involve the backlight or the inverter that powers it. A way to verify this is to shine a flashlight on the instance the screen blinks out at the screen. A faint image of your desktop should be visible.  The CCF Lamp is similar to household fluorescent lamp which of course can fail after some time of usage.  The inverter is a high frequency high voltage power for the lamp.

Since there are dangerous high voltages inside, extreme care should be practiced when working on exposed components.  Should you not be comfortable doing this, perhaps your best bet would be to seek the services of a qualified technician.

Hope this be of some help/idea. Pls post back how things are or should you need additional information.

Good luck and kind regards.

Posted on Oct 24, 2007

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Hello every body, try to unplug the cable from your cpu and try to turn on again your monitor, if the monitor is still blinking it means that the problem is within your monitor follow then the advice of benimur.

cheers!

boy

Posted on Apr 05, 2008

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Hey guys, I read all these posts and tried them all, but my solution turned out to be, unplug the input (12-pin) to the high-voltage board in my IBM T221, and the 12 one-pin outlets (to 2 or 12 backlights, I think). It was corrosion on the contacts. When they were plugged back in a couple times, the blackouts ended.--yankeedam

Posted on Mar 16, 2008

Hey guys, I read all these posts and tried them all, but my solution turned out to be, unplug the input (12-pin) to the high-voltage board in my IBM T221, and the 12 one-pin outlets (to 2 or 12 backlights, I think). It was corrosion on the contacts. When they were plugged back in a couple times, the blackouts ended.--yankeedam

Posted on Mar 16, 2008

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