{Collins} Malfunctioning DL-1 dummy load

I just bought a DL-1 and the relay doesn't work properly.....it buzzes and  
will not close.  I am supplying it with 6.3 vac from the 32S-3.  It  acts like 
it's a d.c. coil used with a.c.  The relay and coil look  original.  Anyone 
out there have any thoughts?  I have not tried to  supply it with 6 volts d.c.  
I purchased it from a reputable dealer who  assured me that it was working 
properly.  It's a nice little box and I  don't want to return it!  Any help 
73,    Larry     W5VHP

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