Same issue here. A handy tip though is to use DVM on 10A range and undo negative terminal. Monitor current and if charging starts it should draw around 5.1v 1.6A at start dropping down fairly rapidly as voltage builds. Use at own risk, I found that heatshrink around meter probe helps reduce the chance of a short. Pretty sure in my case adaptor went bad as it won't even run my pi!
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Same issue here. A handy tip though is to use DVM on 10A range and undo negative terminal. Meter goes between spade and now exposed negative screw bushing. Monitor current and if charging starts it should draw around 5.1v 1.6A at start dropping down fairly rapidly as voltage builds. Use at own risk, I found that heatshrink around meter probe helps reduce the chance of a short. Pretty sure in my case adaptor went bad as it won't even run my pi!
Same issue here. A handy tip though is to use DVM on 10A range and undo negative terminal. Monitor current and if charging starts it should draw around 5.1v 1.6A at start dropping down fairly rapidly as voltage builds. Use at own risk, I found that heatshrink around meter probe helps reduce the chance of a short. Pretty sure in my case adaptor went bad as it won't even run my pi!