Elecraft KPA500

[James Jordan]

Anyone in the area repair or have troubleshooting experience for this amp?
Power on Standby HV reads " .1"
Operate gets red light and message "270V ERR"
I hate to ship the whole heavy thing back to Watsonville if there's a
component that can be changed out. I built it as a kit so I don't mind
"unbuilding" it if I know what I'm looking for.
Please reply offline.
73,
Jim, K4QPL