[time-nuts] HP-5370B Running Hot...

paul swed paulswedb at gmail.com
Tue Sep 14 18:26:30 UTC 2010

I guess with humor, I clean up 20 years of stuff on/in the gear. Almost
always straight off.
Reason. That forces a very good inspection. You find all kinds of clues as
to what might be up. Burnt caps, resistors, loose wires and such.
Other thing I do is measure all supplies while cold looking for dead shorts.
Amazing how many caps show up that way.

On Tue, Sep 14, 2010 at 2:16 PM, Greg Burnett <gbusg at comcast.net> wrote:

> Yeah, good advice to get rid of the fan filter material, Paul. With the HP
> 8568B & 8566B, Signal Analysis Division (SAD) weighed the pros and cons of
> keeping the instrument clean vs. risk of over-heating if the fan filters
> were not kept clean. They decided in favor of reduced risk of heat damage,
> and eliminated the fan filters, from then on shipping the boxes without the
> fan filters.
> Greg
> ------------------
> Paul wrote:
> ...That said many if not all of the filter material is degenerated.
> Its soft and sticky. At a min get rid of it.
> My environments clean so I leave them out.
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