[time-nuts] HPZ3801 Failure

[Wes Atchison]

My HPZ3801 has died.  It appears the internal DC to DC converters have died.
The fuses (4) I have found on the boards check good with an ohmmeter.  I
have checked voltage on test points where labeled as a supply.  No voltages
present.  Is there a schematic available somewhere?  Has anyone repaired a
Z3801 with similar problems?

Thanks for any help.

 

73,

Wes

WA5TKU