Hi Glenn.
I have already been studied the the schematic, but can't find any reason to this in the hardware, and any other software don't give any changes, bus it must be software related, to when it blanks the display, in standby or OFF mode.
It is by the way, the ATU-15 model, that looks like to be the ATU-10, but with the two LED's in the front.
73 de OZ3XO - Stig.
