[time-nuts] Question about 5065A 2nd Harmonic Problem

[Steve Rooke]

2009/8/30 Chuck Harris <cfharris at erols.com>:
> Hi Stan,
>
> It gets like a broken record, but the first place I always go when a
> formerly working piece of test equipment stops working is the power
> supply.
>
> Check the power supply voltages for both value, and ripple.
>
> Then check all of the electrolytic capacitors for ESR.  It only takes
> one, in a loop somewhere, that has opened up to completely hose the
> operation.
>
> Tantalums are notorious for becoming short circuit... Fortunately, HP never
> really endorsed the epoxy dipped tantalums, like Tektronix did.  However,
> the
> milspec axial leaded caps they did use sometimes open circuit.
>
> The 5065 is loaded with carbon composition resistors (IIRC).  They are noted
> for drifting out of range... particularly the high value resistors.
>
> The very last place to go is any adjustments!

Is there some way we could make up a FAQ and have it available
somewhere to save having to dig through reams of old group postings?
This is the area where a web based forum would score or even like the
monthly usenet postings.

Cheers,
Steve

> -Chuck Harris

-- 
Steve Rooke - ZL3TUV & G8KVD
A man with one clock knows what time it is;
A man with two clocks is never quite sure.