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Starlogic 20 inch widescreen monitor screen keeps going black

When I turn my monitor on, it will stay on for a moment, and then go black. I can turn my screen off, it will come back on, and then go black again HELP Our starlogic 20 inch widescreen monitor screen keeps shutting off. It comes on for about 5 seconds, then goes black. In order to even shut the computer down, you have to turn it on manually, try to click shutdown, the monitor shuts off, turn on manually again to click shutdown, etc. It is unuseable!

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  • raybrumbaugh Mar 13, 2009

    I have the Starlogic widescreen HD20W which is probably what the other person has. The power supply is a separate unit with 120 V going in and 12 V @ 5 amps going out. I took the power supply to my Community College electronics dept to check out and they said it was fine. The "power on" light on the actual monitor stays on whenever the power is turned on, regardless if the screen is working or gone black.

  • Anonymous Apr 27, 2009

    i have the same problem and YES i can see the image with my flash light, so now how can i fix this black light thing?

  • Lou Ebert May 11, 2010

    bbkieffer, It sounds like a possible printed circuit board could have failed inside your monitor. You failed to tell if the light in the power on/off button shows any activity??? Some of these LCD monitors do have problems with their power supplys. Every LCD Display has two types of supplys in them. One requires that the first one is working. The main powersupply powers up two things. 1. the digital interface board for the digital info processing that is what you see on the screen, and 2. it also supplies low voltage to operate what is called an inverter power supply that generates high voltage 1000v-1500v to light the cold cathode Fluorescent backlight tubes that let you see what is on the screen. Yes, they are very similar to the new style of curlie-que screw-in light bulbs--- only the tubes are straight ones and run left to right in back of your LCD/FPD!!! You will need to contact Starlogic to find out if they have a monitor swapout program where you send them your nonworking monitor + some cash and they send you a REFURBISHED replacement. Or you could hunt down some local TV/Monitor repair shop that knows how to repair/replace CCF tubes and knows all about switch-mode and inverter supplies. Good luck on this mission, I'm louie12fix on fixya. or lmistyrel @ aol.com. BYE!

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This is probably a back light problem. Take a bright flashlight and while the monitor is on, point it at the LCD and try different angles, etc. If you can see an image, it is the back light, probably the back light voltage converter unit in the lcd. It could also be the back light bulbs.

If you don't see an image with the flash light, then it could be the main logic board.

ort11

Posted on Mar 26, 2009

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Alternate power supply that doesn't have the switching adapter in between causes blackout, I went and found the original power supply and monitor is back up and running.

Posted on Jul 17, 2014

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