[Elecraft] KPA500 display now blank? Help

[Geoffrey Downs]

Perhaps it could be temperature. About a year ago, whilst experimenting in 
connection with another problem, I found that if I cooled my KPA500 down to 
13C (about 55F) by leaving it overnight in an unheated part of the house and 
then re-installed it into the shack, at switch-on the display lit up blank, 
no relays clicked when a band button was pressed and there was no output but 
if I waited for 10 minutes or so until the amp temp rose to about 18C 
everything worked normally again. However, I never had a DISPLAY FAULT 
message.

73

Geoff
G3UCK

-----Original Message----- 
From: Gene N4FZ
Sent: Wednesday, July 03, 2013 6:48 PM
The display just went blank, after a previous power on a few days ago, that
read DISPLAY FAULT or something close to that. It has been working fine
until now, what could be causing this? I have the AUXBUS connected to the
K3, and just re-downloaded the latest software for both the K3 and the
KPA500. Seems to be switching bands ok, but..wow it just now started
displaying again. What could be causing this?