[time-nuts] Re: Z3801A questions

[ed breya]

Bob, I see your point about questioning whether the real failure was a 
short or an open (fuse). I believe from the OP, it was an "apparent" 
short because the SMPS supplying the Z3801A unit would not start it up. 
This can be for a number of reasons, including a short, or a part 
failure as voltage goes up, or the inability of the PS to deliver enough 
startup surge current (even though it did before).

I don't think the conversation evolved to diagnosing the actual problem, 
but jumped from considering some possible causes, to outright re-doing 
of the whole PS design - which I believe is unnecessary, and risky.

Some more testing should show the real deal. Then the options emerge.

Ed