Question about ViewSonic VX715 17" LCD Monitor

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Monitor turns on then shuts off

I have a vx715 monitor and it will turn on for a few moments then it shut right off but goes black screen and I can't see anything, I have done eveything possible tried different screen res. bvut nothing happens I even opened iot up and unplugged all the wires thinking it would reset itself but nothing happens. what else could I try with this monitor I have?

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  • smokman May 05, 2008

    I have the same problem. Do I really need to open my monitor to replace something ?

  • Ibiza Nov 04, 2008

    Big Thank you !



    I had the same problem with my Viewsonic vx715 monitor (2005). It was shutting off, in other words went black, after 3 seconds of viewing and then I had to turn it off and turn it on again to see an other 3 seconds of normal viewing on the screen. When it was black I could still see, with close attention that the display was still there on the screen but very, very black.



    I opened my monitor like ''Tumlegutt ''discribed and solved my problem by changing a bulged capacitor of 1000uf 16 V as described by ''Guest'' (solution #3). I'm so happy ! My boyfriend did the soldering after having noticed the little bulge on the back of the capacitor and everything was solved. We bought a soldering gun to do that but it was worth the try. My monitor is saved from going to the landfill and no need to buy a new one. Big saving. Asking an expert of an electronic repair shop would have cost 100 $ so the only other solution was buying a new one. What a waste it would have been ! So thanks for your informations. Awesome !



    Ibiza

  • vcalvin74 Apr 01, 2009

    ViewSonic VX715
    Model Nr. VS 10057 (MADE IN CHINA!)
    Turns on for about 2 hours and then off. You have to rest it for 8 hours or so. The 1000 microFarad 16V capacitor is slight bulged.


  • el mama May 11, 2010

    Many thanks to GATTEN for a clear and professional instruction to solve the problem.

    This is THE solution.

    El Mama

  • Julie Judson
    Julie Judson May 11, 2010

    Is your computer still on when your monitor goes black or is it rebooting at the time.

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Find and replace the ccfl inverter board. Usually internal on the rear of the lcd panel under an aluminum shield.


srich

Posted on Mar 22, 2008

I agree with Tumlegutt. There can also be an issue with blown capacitors. I had the same VX715 monitor I bought with the same issues from a seller for $30. The display would shut down after 3 seconds and the screen was black. I used a flashlight on the screen and could still see the image. Right away I knew that the power supply wasnt the problem because if it was I wouldnt have an image on the screen. I also knew it couldnt be the backlights because it is highly unlikely that both backlights would be out at the same time. I narrowed it down to the inverter transformers. I opened the monitor and scanned them with my eyes. I also checked the backside of the board for dry joints. The soldering looked fine. I was still convinced that the issue existed in and around the inverter. I then scanned the board with my eyes and noticed 2 1000uf 16V bulged caps near the inverter side of the board. Lucky for me I had 2 esr capacitors of the same value made by Sanyo. I went ahead and removed the blown caps and soldered the new ones onto the board. I proceeded to reinstall the metal cover at the back and then I closed up the monitor.

I then hooked it up to my PC and powered it on. The monitor turned on and guess what...the screen stayed on! I tested this for 5 days and there were no issues. I already had a 19" Dell monitor so I re-sold the Viewsonic monitor 7 days later for $120. Not bad huh? I just saved a good monitor from going to the landfill.

Now back to topic, I suggest scanning the board with your eyes first. If you need to solder and you arent comfortable or dont know how to do it, I suggest sending your monitor to a professional or an electronic repair shop. Good luck.

Posted on Aug 08, 2008

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One thing you could try, does not cost anything.... Be aware that voltages might be present inside monitor also after turning off!!! Open monitor back side plastic cover, open metallic shield. Locate power supply / inverter board, take the board out so yo can inspect it (have to take off three cables and some screws). Locate the inductors on the inverter side of the board(they are round and you can see copper coloured wire). Check soldering on the backside of the board.

Have seen many vx715 monitors this with this fault. The soldering is bad, making symptoms as you describe.

Electr. Engineer SF

Posted on Jun 13, 2008

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