Just bought the 5.25V USB charger (https://www.adafruit.com/product/501). I'm observing that when I plug in certain USB cables (not even connected at the other end), the blue LED goes out. Those USB cables work fine with other chargers. What's going on here?
If I were hard-pressed on this question, I'd say the charger is "checking" the cable somehow e.g. expecting certain termination of the data lines, but that sounds unlikely (?). Isn't a USB cable, electrically, simply 4 separate conductors not connected whatsoever?
LED on USB charger goes out when certain cables are plugged
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- adafruit2
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Re: LED on USB charger goes out when certain cables are plug
it should be the 5V output OK LED. does it work otherwise?
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Re: LED on USB charger goes out when certain cables are plug
5.18V when the LED is on, so yes.
- adafruit_support_mike
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Re: LED on USB charger goes out when certain cables are plug
What about when the LED is off?
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Re: LED on USB charger goes out when certain cables are plug
When the LED is off, voltage seems to collapse down to something small (don't have a measurement right now). The observation would be consistent with a short on the cable, but then, those cables (and it is more than one) work with other chargers.
- adafruit_support_rick
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Re: LED on USB charger goes out when certain cables are plug
We can try replacing the charger. Please email [email protected] with a link to this thread for a replacement
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Talk about Adafruit Raspberry Pi® accessories! Please do not ask for Linux support, this is for Adafruit products only! For Raspberry Pi help please visit: http://www.raspberrypi.org/phpBB3/
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