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    LCD Problem

    Theres any one knows how to troubleshoots a LCD monitor of a hematology analyzer. The display output on the screen is blur. Is there any component of the board of LCD cause the blur or the LCD is the culprit one. Can you help me guys how to diagnose it. THanks
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    Why 60 hertz or 50hertz

    Hello everyone...
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    Turn on after 3 seconds turn off

    I went to my friend he ask for my help if i can repair his kenwood model  RX-39 audio system. I turn on the power then it seems the unit have no problem but after 3 seconds the unit turn off and the message appear on the display ( Protect )..I noticed after repeatedly turn on i hear a clicking...
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    T.V ( No display )

    Good Day..
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    cell phone charger

    - I know and i really have good understanding about the input ac source, frequency and output voltage..But i dont understand Wheres the 100mA & max 750mA come up? Can u give me some idea & mathematical explanation to come up for 100mA & 750mA.. thanks - How can i compute the power...
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    220 volts Versus 120 volts

    1. Hi guys! i noticed that every countries have their different voltages supply..in my country we used 220volts other countries used 120volts... im just confused can u pls enlighten me...what is more economical to used 120v or 220v? advantages & disadvantages using 120V or 220V? We all know...
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