[Heathkit] HX-10 Maurader

Sun, 3 Mar 2002 14:09:30 -0600

HI  remove the high voltage leads from each rectifier socket.   then
power it up to see if you are still getting high input current, if so -
bad power tx.  If it is ok then --  the black socket material does arc
and carbonize, common in the 5R4 GY sockets in some collins gear. the fix
is to replace the sockets with ceramic ones or the yellow mica filed
types.
old jack     [email protected]

On Sun, 3 Mar 2002 15:00:59 -0500 "Jim Temple" <[email protected]>
writes:
> Hello to the group,
> 
> I recently picked up one of these.  With both rectifier tubes 
> removed, the
> unit still blows fuses.
> 
> There is clearly a dead short somewhere.  I have been over the 
> wiring
> several times and can not see a short.
> 
> The two VFO tube filiments illuminate ok, so that transformer is 
> ok.
> 
> Next, I will disconnect all wires to the accessory plug to eliminate 
> that
> wiring.
> 
> I suspect that the main transformer has a short.  How can this 
> transformer
> be tested?  Is there an ohm value that is appropriate for the HV, 
> LV, and
> three filiment windings, or is there a way to power it separately to 
> test
> the various sections?
> 
> Thanks for any suggestions on transformer testing.
> 
> Sincerely,
> 
> Jim Temple
> 73, KF4ICZ
> 
> 
> 
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