[Elecraft] Temperature or Warmth of KPA500 when "Off" ?

[Andy Durbin]

"But, is this normal?  I assume that there is a small current powering a micro processor and its related circuitry but should it be actually that warm — is there a cpu burning "idle loop" used and thus causing high current flow thru the processor.  "

My KPA500 draws 0.14 A when "On" and in standby mode.  It draws 0.10 A when "Off" with rear power switch still on.  Both measurements at 117.2 VAC (A/C is running at my house and probably every other house on the same transformer).

Yes the CPU is active when "Off".   It has to be for the KPA500 to be turned on my serial command.

"The KPA500 uses single character commands when in boot mode. Boot mode is the state the KPA500 is
in when the rear panel power switch is in the ON position, while the main firmware is not running. This
mode is used for starting up the KPA500 or downloading fresh firmware. Bootloader commands must be
sent upper-case only."

73,
Andy, k3wyc