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konzert 502 gawin nating super bass sub woofer

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diy emergency led light

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mini diy videoke (no need internet connection)

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paano mag repair ng power amplifier step by step.

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bluetooth speaker no sound audio ic problem..

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how to convert 220ac to 12volt dc electric fan

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how to make 5-12volt dc clip e fan

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usb rechargeable emergency led light convertion

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bass and treble signal

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CAPACITOR checking and discharging

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Naputol na RCA jack paano tanggalin

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smd resistor replacement

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1kw snadi inverter no output problem

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running led light

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how to make 12 volt output..using 18650 lithium battery +boost up converter

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arc plasma lighter

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12volt bluetooth module using 3.7volt lithium battery

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how to make amplifier using 1 transistor only.

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how to make arc plasma lighter

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checking pnp transistor

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diy bluetooth speaker

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capacitor testing