[time-nuts] Looking for Z3801 Power Supply Board

paul swed paulswedb at gmail.com
Mon May 23 23:15:20 UTC 2016


Boy do I agree with Dave's comments. Even if the big block inverter is bad
it can all be replaced. I have a small inverting supply in my unit to
replace one leg. I think it was the -5V supply. Its been running for 7 plus
years.
Good luck
Regards
Paul
WB8TSL

On Mon, May 23, 2016 at 6:54 PM, Dave M <dgminala at mediacombb.net> wrote:

> Dan,
> If you haven't already found the Z3801A page at
> http://www.realhamradio.com/GPS_Frequency_Standard.htm, you should read
> it thoroughly (in your case, especialy the section on the power supply).
> there is a good pictorial that shows locations of all the power supply test
> points. Using that pictorial, you should be able to determine which power
> supply is causing the problem (there are several).
>
> Otherwise, (I'm sure you're well aware) if you're set on getting a
> replacement PSU assembly, you're probably looking at buying a parts unit
> and salvaging the PSU board from it.  However, you might find that the
> parts unit also has a bad PSU.  It's a chance you take.
>
> Cheers,
> Dave M
>
>
>
> Dan Rae wrote:
>
>> My Z3801 power supply board has given up the ghost.  It had been
>> working well apart from an occasional Error 230 causing it to go into
>> Holdover for no good reason from time to time which may well be related of
>> course.
>> Does anyone have a good power supply from an otherwise dead unit which
>> might enable me to get it going again?
>>
>> I've had the darn thing for fifteen years and miss it :^)
>>
>> Dan
>>
>
>
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