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Old Oct 15, 2014, 08:40 AM
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United States, CA, Los Angeles
Joined Feb 2013
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Help!
Efuel 30a power supply (please help)

I bought this power supply about a year ago and its starting to act up. When I plug it in it shows me 19.8-19.9 volts on the display and my icharger goes into over voltage protection. Is there anything i can check or do to make this power supply work correctly again. Please let me know if you need ferther info.
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Old Oct 15, 2014, 09:32 PM
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USA, MO, Florissant
Joined Nov 2010
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The internal feedback that regulates the voltage has failed; could be a bad solder joint, or a component failure. But, without a schematic, that's where my knowledge ends.
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Old Oct 15, 2014, 10:09 PM
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Thanks for the reply. It's kinda weird sometime when I plug it in it works fine then when I put a bigger load on it, it goes to a higher voltage. Other times it just starts off high and stays there.
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Old Oct 16, 2014, 07:40 AM
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United States, FL, Orlando
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A while ago, someone had a similar problem with a Hobbyking power supply. He opened it up and fond that the potentiometer that adjusted the voltage had developed a rough corroded spot which caused the voltage to go crazy. He turned the pot a bit to a different spot and it started working fine again.
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Old Oct 16, 2014, 08:28 AM
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I'll try cleaning it thanks for the reply.
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Old Oct 16, 2014, 04:16 PM
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I gave that a try and it's still the same no difference.
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