Top Positive Review for rc toys, fun sports, fashion, popular electronics on Banggood|Shopping New Zealand

29% OFF Small Amplifier Two Channel Speaker Audio Kit TDA2030 Mini Electronic DIY Production Parts Assembly US$31.99 US$44.99 View It

Overall:

falc 17/09/2018

This was give to my grandson to practice electronics ie identifying components, and soldering.... The track lifts and breaks very easily and is a bit of a nightmare. After I fault found the track breaks, it did work, but with a loud hum! which defeats the object. The -15V rail is pulled down to -5VDC and has a 50Hz ripple on it! as the the only the amplifiers and the LED indicator are on this rail, is this the fault of the mains transformer or design?

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