Question about Sharp XL-MP130 CD Shelf System

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Sharp XL-MP130 CD shelf sys. won't work...at all

Whenever I plug in the CD player, it starts clicking and none of the buttons work. i think it might be the fan since the noise is coming from there. i usually leave it unplugged so that it stops making the noise.

Posted by redskull15 on

  • redskull15 Nov 22, 2007

    also, if you disconnect the power to the optical drive, the clicking clicks slower.

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1 Answer

Anonymous

Hi There,

The clicking noise is usually the power supply "tripping" because of an over load, your explanation of the fault is very good and helps us in advising you about the fault...

Because the clicking gets slower it means that you have reduced the current being drawn from the power supply.

The item that is causing the over load is the item that when you plug it in or turn it on causes the clicking to start up...

Tyhe power supply is called a switched mode power supply and is usually a collection of transistiors capacitors resistors and a transformer all specially set up to make DC Direct Current and AC alternating current power for your electronics to work with.

These power supplies are expensive and no fuses are employed to make them work but a special detector circuit is installed to close down the power when a high current draw down is detected, Once the high draw down is detected the power supply closes itself down, so then it sees no more high current draw down so it starts up again and this causes the click as the internal transformer and capacitors once again start the cycle to operate to make the DC/AC supplies. So once started up the High current is detected and the power supply closes it self down and the cycle is repeated over and over....

Its a specialised job to locate the problem so its not something you can do your self without electronics training...

Cheers From YUBEUT

Posted on Nov 24, 2007

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