Are you sure the led blink when drawing more power than it can charge ? It happened to me when there was no load. I've read on the archlinux installation faq it was when the soc was too hot, a thermal security.
When my soc get too hot, i underclock the cpu @1,2Ghz on BIG and 1Ghz on small, for everyday usages it's enough for me (Manjaro overclock the cpu to 2Ghz BIG/1,6Ghz little instead of 1,8Ghz BIG/1,5Ghz little which is a mistake i think, too much power draw and heat).
/sys/devices/system/cpu/cpuX/cpufreq/scaling_available_frequencies
/sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq
replace cpuX by : cpu 0-3 little | cpu 4-5 BIG
Never happened to me anymore for the moment.
When my soc get too hot, i underclock the cpu @1,2Ghz on BIG and 1Ghz on small, for everyday usages it's enough for me (Manjaro overclock the cpu to 2Ghz BIG/1,6Ghz little instead of 1,8Ghz BIG/1,5Ghz little which is a mistake i think, too much power draw and heat).
/sys/devices/system/cpu/cpuX/cpufreq/scaling_available_frequencies
/sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq
replace cpuX by : cpu 0-3 little | cpu 4-5 BIG
Never happened to me anymore for the moment.