Question about Sharp CD-BA200 CD Shelf System

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My Sharp model no. CD-BA250 is displaying "protect". It will not turn off on or anything!! How do i clear it out to fix the problem.

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  • stormie1 Dec 12, 2008

    i have the same problem - display shows "protect" and will not change. My model is cd-bp2000

  • Anonymous Jan 18, 2009

    same problem

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  • 82 Answers

Disconnect your speaker boxes. If the "protect" error goes, then the speakers or wires may be at fault. If the error remains, most likely the audio output IC is blown.

Posted on Oct 04, 2008

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It is possible that the amplifier had encountered a fault with a higher current drain which had triggered it to a protection fault condition. The fault can be your output drivers- the MOSFETS/IC's fitted for both the channels, Use a meter after disconnecting to check for short in the drivers. Disconnect the positive and negative voltages to the output and see if the protect changes. Even a fault in the preamp stages that drives in high current into the output can shut the Amplifier. Sometimes this can be a noise like a HUM or HISS before the protect works. Faulty capacitors in these circuits also can cause similar issues and needs close observation.
You need to confirm and replace the specific stages or outputs. If not there can be issues in the mother board, maybe the protect circuit by itself is shutting off due to a faulty bias , maybe a leak in any voltage/current sensing circuit. Also disconnect the speakers and test, if the protect is off then check for short on the speakers.

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Protect is bad. It means the amplifier thinks it is overloaded. Check the speaker wires to make sure there are no loose connections or shorts.

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This is a common fault. Check following:

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If you are a technician desolder the Audio amplifier IC,and check if the stereo turn on but with no sound.If the stereo turn on the audio amplifier IC is in short circuit and need to be replaced.
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My audio system says protect on display


Hi Jean,

Without a brand and a model, best that I can provide are generic possibilities:
1. unplug the unit from the mains for a couple of hours. This is supposedly to reset most systems; and/or
2. check the speaker wires and make sure none of any bare wires are touching each other.

If your concern has not been corrected after completion of the above procedures, pls post back brand and model.

Hope this be of initial help/idea. Pls post back as requested, how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

Feb 23, 2008 | Audio Players & Recorders

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An audio output IC may be defective. This set carries two output IC's.

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