New test with the EVM and official Pandora 5V adapter, the red warning LED shows up on the board. I boot with the pre-compiled Letux-4.9.0-rc5 on Slackware -current armhf.
3 neon loops, 1 memtester on 2G. No problem after more than 30 hours, dmesg is clean. cpufreq stats: 1000 MHz:0.15%, 1.50 GHz:99.85% 64°C
Do I let it run ?