[time-nuts] Z3816A Control and Cleaning

[paul swed]

Joe
Been a while. Sounds like a reasonable approach with the soap and water.
The key is not to force water into the inductors. I take soapy water and a
tooth brush it works wonders. Then dry in an oven at about 100 degrees just
to drive off the moisture. Very gentle.
I guess the other point is to get a better feel for the gunk. Does soap and
water do it. The fact that IPA didn't is interesting. It may be oil based.
Good luck
Paul
WB8TSL/1


On Thu, Jan 23, 2014 at 9:41 PM, J. L. Trantham <jltran at att.net> wrote:

> I recently acquired a Z3816A as a 'spare' and it does not work reliably.
> The ALARM LED sometimes comes on and sometimes doesn't.  Sometimes it
> tracks
> and locks appropriately and other times it goes into HOLDOVER.  The main
> PCB
> is very dirty and has the appearance that it has been in a humid and dusty
> environment.  I am suspicious that there are some 'leakage' issues related
> to this dirt and would like to wash the board.  What would the group
> recommend for cleaning the board?  I sprayed it with 91% IPA and used a
> paint brush to try to clean the board.  Some improvement but still dirty.
>  I
> was thinking of warm soapy water with a paint brush followed by warm water
> followed by 91% IPA followed by a hairdryer then an hour or two in an oven
> at about 100 to 150 degrees F.  Thoughts?  I'm a bit concerned about the
> inductors and the possibility of water leading to problems with them.
>
>
>
> Also, I seem to recall a command that can be sent by SatStat to change from
> GPS time to UTC time but I can't find it in my files.  Is there such a
> command or am I hallucinating?
>
>
>
> Thanks in advance.
>
>
>
> Joe
>
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