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sarah4d2bg 25/09/2023
US plug version contains a capacitive dropper circuit appropriate for 240v, not 120v. This results in low voltage to the receiver/speaker/LEDs etc. which run on 5v DC (if my math is right, the dropper circuit is designed to produce 4.9v DC). Symptom is that when receiver is plugged in, only a very faint ". C" appears on the LED display and nothing else works. You could fix this by plugging the receiver into a cheap voltage doubling 120v-240v adapter. I opted to remove the AC side of the circuit and solder a USB plug to the low voltage + and - points where the daughterboard is connected (circled in the photo I uploaded), since transformerless dropper circuits like this provide no mains isolation and should never be used in plug-in products designed to be touched like this one. The receiver only draws about 1W and will run fine from even the smallest USB AC adapter. Would love to see an OEM USB version of the receiver, because the product works great once properly powered.
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  • Banggood Dear Customer, Thank you for placing an order on Banggood and we hope you will enjoy the products you bought. If you have any further questions or suggestions, please do not hesitate to contact us via these links: Personal Computer: http://www.banggood.com/Contact-Us_hi111Mobile: https://m.banggood.com/contact_us.html Best regards, Banggood Team

    27/05/2024
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