[time-nuts] Stanford RS620 Acting up

Ulrich Bangert df6jb at ulrich-bangert.de
Thu Oct 11 02:24:59 EDT 2012


I had similar difficulties with my SR620. I rewired the cables to the power
switch so that the "out" position now switches the power on and the "in"
position switches the power off. This has worked for me in the last 4 years.

Ulrich Bangert

> -----Ursprüngliche Nachricht-----
> Von: time-nuts-bounces at febo.com 
> [mailto:time-nuts-bounces at febo.com] Im Auftrag von Robert LaJeunesse
> Gesendet: Mittwoch, 10. Oktober 2012 23:06
> An: Discussion of precise time and frequency measurement
> Betreff: Re: [time-nuts] Stanford RS620 Acting up
> 
> 
> The SR620 I worked on was unused for a long time, and would 
> not turn on. Seems 
> the power switch was oxidized and would not self-clean. Had 
> to unmount it so I 
> could use chemical cleaners without getting any residue on 
> the case or PCB. 
> IIRC the whole front panel needed to be pulled to do that 
> (not too difficult). 
> Beware the SR620 is slightly unusual in that the transformer 
> is not switched, 
> but rather the DC supplies are.
> 
> Bob L.
> 
> ________________________________
> From: Eric Haskell <eric_haskell at hotmail.com>
> To: Time Nuts <time-nuts at febo.com>
> Sent: Wed, October 10, 2012 4:59:51 PM
> Subject: [time-nuts] Stanford RS620 Acting up
> 
> My RS620 became difficult to start ... 
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