[time-nuts] HP Z3805A internal PSU questions

[Bob kb8tq]

Hi

Trace around the input filter. There are coils there that may 
go open. There are also a couple of board mount fuses that
pop from time to time.

Bob

> On Sep 29, 2020, at 8:07 AM, Tim Tuck <timt at skybase.net> wrote:
> 
> And as soon as I posted this I found what I was looking for  on KO4BB's website - I forgot that the z3805 is basically the same as a Z3801.
> 
> So the fault finding continues.
> 
> cheers
> 
> Tim
> 
> On 29/9/20 8:38 pm, Tim Tuck wrote:
>> 
>> Hi all,
>> 
>> I have a Z3805A that has failed. The internal power supply board is at fault in that there is nothing on P3.
>> 
>> I was wondering if anyone had schematic or more detail on it or ideas about a common fault for the board.
>> 
>> 
> 
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