[time-nuts] pts 160 power problem

Dave Mallery dave.mallery at gmail.com
Mon Mar 14 16:00:40 UTC 2011


hi

having finally acquired a stiff supply, i

put in the requested 5.4vdc and the unit draws the specified 1.5a..

still not working, no output signal, so back to the manual.

dave

On Fri, Feb 25, 2011 at 6:59 PM, EB4APL <eb4apl at cembreros.jazztel.es> wrote:

> Hi,
>
> Since this thread is about a PTS repair, I think this is not too much OT.
>  I need the manual for my PTS 040, I already have one for the 160 from
> Didier's site and while both models are similar end employ most the same
> modules, I would like to have the specific one for my model.
> According to PTS web site this model is still on production, but I think
> that asking PTS for one would cost me much more than I paid for the real
> thing.
>
> If anybody knows were I can get one I'll appreciate very much.
>
> Regards,
> Ignacio, EB4APL
>
>
>
> El 26/02/2011 0:27, J. Forster wrote:
>
>> That depends on the phase of the moon and your religion.
>>
>> Sometimes low-ESR aluminum; other times good Tantalums (150D or CS-13s)
>>
>> No two people agree on this issue.
>>
>> -John
>>
>> ==============
>>
>>
>>  thanks everyone.
>>>
>>> i found a cache of tantalum caps in the output amp module.  also, there
>>> isn't any output any more.
>>> struggling to get all those @#@ screws out so i can get to them.
>>>
>>> should i find new tantalum caps, or is there a better substitute?
>>>
>>> dave
>>>
>>> On Fri, Feb 25, 2011 at 11:29 AM,<GandalfG8 at aol.com>  wrote:
>>>
>>>  In a message dated <25%2F02%2F2011%2017>25/02/2011 17:13:01 GMT
>>>> Standard Time,
>>>> dave.mallery at gmail.com writes:
>>>>
>>>> i tried  another more robust 5v supply, but that goes to 4.5v and ng
>>>> output.
>>>>
>>>> i  removed each of the plug-in decades, one at a time, looking for the
>>>> guilty
>>>> one.  no joy.  i also removed the left rear module (uses  5v).  the
>>>> other
>>>> two
>>>> modules only use 12v. which is fine.
>>>>
>>>> has  anyone been here before?  could it be a problem in the backplane (a
>>>> work
>>>> of art, btw)?
>>>>
>>>>
>>>>
>>>> ---------------
>>>> Hi Dave
>>>>
>>>>
>>>> I've used quite a few of these and have never yet experienced an  actual
>>>> component failure, obviously not saying it can't happen just that  once
>>>> sorted
>>>> yours should remain pretty reliable.
>>>>
>>>>
>>>> As John already suggested I'd also look for possible fautly tantalums or
>>>> other capacitors across the supply but would also suggest removing all
>>>> the
>>>> modules from the motherboard at the same time before proceeding any
>>>> furter
>>>> and checking if the symptoms still persist.
>>>> I know what you've done has probably eliminated the modules but it
>>>> would
>>>> be a shame to tear into the backplane if you just happened to have more
>>>>  than
>>>> one faulty module.
>>>>
>>>> I did once receive a previously working PTS160 by post that refused to
>>>> play
>>>>  and eventually located a very small solder blob, presumably  from
>>>> inside
>>>> the associated module, that had dropped into an edge  connector and
>>>> wedged
>>>> between a couple of pins, that was fun:-)
>>>>
>>>> If you haven't already found it there's a manual for the PT160 on
>>>> Didier's
>>>> site.........
>>>>
>>>> _http://www.ko4bb.com/cgi-bin/manuals.pl?dir=05%29_GPS_Timing/PTS_
>>>> (http://www.ko4bb.com/cgi-bin/manuals.pl?dir=05)_GPS_Timing/PTS)
>>>>
>>>> regards
>>>>
>>>> Nigel
>>>> GM8PZR
>>>>
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>>>>
>>>>
>>>
>>> --
>>> Dave Mallery, K5EN                 (ubuntu linux 10.10)
>>> HC31 Box 99E;                   Williamsburg,  NM  87942
>>>
>>> no gates...
>>>   no windows!
>>>     free at last!
>>>       linux counter #64628 (since 1997)
>>>
>>> "People aren't as dumb as Microsoft needs them to be."
>>> --PJ, May 2007
>>> _______________________________________________
>>> time-nuts mailing list -- time-nuts at febo.com
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>>>
>>>
>>>
>>
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-- 
Dave Mallery, K5EN                 (ubuntu linux 10.10)
HC31 Box 99E;                   Williamsburg,  NM  87942

no gates...
  no windows!
    free at last!
      linux counter #64628 (since 1997)

"People aren't as dumb as Microsoft needs them to be."
--PJ, May 2007



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