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Hi, can you help me with a problem I am having with my Sharp LL-T17A4-H Monitor please? Sometimes the screen displays properly, but a lot of the time recently it just shows a few lines with a purple-ish background over part of the screen. When once it was like this, and for no reason,the desktop began to appear from the top of the screen and, by notches, went back to a normal desktop for a while. Your thoughts please.

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  • davdaron Jul 01, 2009

    Hi, thank you for your advice. Have already tried your suggestions without success and really have reached the same conclusion as yourself and that is to go for a new monitor.
    thank you once again

  • davdaron Jul 01, 2009

    Thank you.

  • davdaron Jul 01, 2009

    Hi, thank you for your continued advice. Being disabled, I was hoping to get the monitor up and running more as a project and with that being the case, I have checked inside the monitor and noted that there are 2 boards inside, both are located by screws. So no soldering would be required to replace the offending board. If I was able to determine which board is at fault, thought I may be able to find another board from somewere and replace the faulty board. Have you any way of advising me which board I would need to purchase ( gived the price etc.)?



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Try this first. Click Start Menu - click Control Panel - click devices - click the + sign on devices click the name of your graphics card check the status box to see if it is working or needs replacing.
Next is Click start menu - click control panel - click personalization - click Dispaly setting - slide the resolution bar to a different setting. If these don't work. Try connecting another monitor to that same computer or connect that monitor to another computer. If all these failed, do not take the monitor to a technician, to get it repaired. It would generally cost more to fex them than buying a new one. The replacement boards on these monitors are priced almost the same as the monitor itself, plus the technician fee. The boards in these monitors can't be fixed by a regular electronic repair shop. The surface mount technology used in the circuit with complex digital chips are beyond the scope of these shops. Trust me I am an electronic technician for so many years. Good luck

Posted on Jul 01, 2009

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  • Ronado Panaligan
    Ronado Panaligan Jul 01, 2009

    I also forgot to add. You can also try to see if there is a loose connection on the wires. make sure the wires between the computer, and the monitor are not loose, since most of the time, Intermittent problem are caused by loose connection.

  • Ronado Panaligan
    Ronado Panaligan Jul 01, 2009

    One last resort, check also if there is anything that can cause some sort of interferance. Don't rush into buying a new one yet. Note anything being turned on when the problem arise. Use it for a while sometimes, electronic device have an uncany way of operating normally again without the problem ever coming back. I have experienced this on a few occasions. If the intermittent problem occurs more frequently as time goes by, then that is a a component inside on its way to the graveyard. Well that is all I can really think of.

  • Ronado Panaligan
    Ronado Panaligan Jul 01, 2009

    I have worked on an HDTV flat screen which somehow works the same way as a flat screen computer monitor. I can honestly tell you that it is very difficult to diagnose. The only thing I can really diagnose in it is the power supply system. These monitors are at the top of our current technology, they very complex and just beyond our scope each chip consisiting of hundreds of thousand of transistor to a few million. I have exhausted all my limitations on this.



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