[Elecraft] OT: Astron linear PS regulation issues

[Jim Brown]

YES!  This is a chronic problem with Astron supplies -- I've never seen 
one that didn't have this problem!  I first discovered and documented 
this issue almost 10 years ago.  In one supply, the two clam-shell 
sections of the chassis were also insulated from each other by paint!  
This failure could easily cause instability!

http://k9yc.com/PowerSupplyBondingAndAudioDistortion.pdf

73, Jim K9YC

On 2/25/2019 6:24 PM, Bob McGraw K4TAX wrote:
> I have personally found several instances in power supplies I either 
> own or have repaired where the green power wire lug is firmly attached 
> by the bolt and nut.   It however was nicely insulated by the 
> paint!.     Visual inspection is the best way to determine if an issue 
> exists.  Do take time to remove the bolt and nut securing the wire lug 
> to the chassis.   Clean the area to bright shining metal where the lug 
> would come in contact with the chassis.  Then reattach the green wire 
> and lug with the original nut and bolt.