[Elecraft] K3 - stuck at MCU LD we upgrading software

[Jim Brown]

Every Astron supply I've opened has had the defect of failure to bond 
the green wire to the chassis. The point of failure is paint between the 
chassis and the mounting lug of the terminal strip where the green wire 
is soldered.  One of those supplies, which I still own as a backup, has 
paint between the two "clam-shell" sections of the chassis that prevents 
their making contact, thus defeating shielding.

Early Elecraft products had this problem, but newer ones do not. Those 
building kits will remember paint-protecting tape that must be removed 
at points where the sections of the chassis mate.

73, Jim K9YC

On Sun,1/29/2017 10:49 AM, George Thornton wrote:
> I took it apart today and found that although the connection between the power leads and the bolts was tight, the connection between the bolt and the housing of the power supply had worked a bit loose over the years.   I took things apart and tightened the connection between the case and the bolt.