[Elecraft] K3 Power output problem - help requested

[Ralph Parker]

Hi gang:
I'm still having power output problems with #1823.
Perhaps you all could conduct a little test for me -

Set your power to 100 watts.
Connect a dummy load or stable antenna.
Enter 'tune' mode to get a constant carrier.
Rap your knuckles on the top of the cabinet, particularly near the back.
Does your indicated power jump up and down?

No need to answer if your output is stable,
but I'd love to hear from you if it varies.

TIA,
VE7XF