this unit came yesterday with problem that it has no picture on lcd or external monitor (vga or hdmi) but still respond on power button, after checked all power rails is present, changing DDR4 ram module known good had a same result.
checked dramrst# on pin 108 of ram slot, it only gave 0.6 volt without ram module installed, this board don't have onboard ram & no discrete vga chip installed. i can't tested dramrst# with ram installed because i don't have boardview where i can trace other test point for dramrst# and i don't know where to measure other signal.
from a lot of info i get, flashing the bios will solve the problem, but i doubt because of dramrst# is missing or is it 0.6 volt on dramrst# of ddr4 sufficient since ddr4 only 1.2 volt and dramrst# signal pulled up to 1.2 volt rail?
checked dramrst# on pin 108 of ram slot, it only gave 0.6 volt without ram module installed, this board don't have onboard ram & no discrete vga chip installed. i can't tested dramrst# with ram installed because i don't have boardview where i can trace other test point for dramrst# and i don't know where to measure other signal.
from a lot of info i get, flashing the bios will solve the problem, but i doubt because of dramrst# is missing or is it 0.6 volt on dramrst# of ddr4 sufficient since ddr4 only 1.2 volt and dramrst# signal pulled up to 1.2 volt rail?
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