[Heathkit] HW-104 finals

[KC8OPP Roger S.]

Hello List,

Two HW-104's and a SB-104 came into the shack for
repair last week.  So far one of each is working just
fine with minor repairs and alignment.  Now it is down
to the last HW-104 and it has bad transistors in the
PA board.  With the PA board from the other 104 the
rest of the rig works FB.

I know I have one bad final transistor for sure and
the other three are questionable.  Installed is the
CD2664A and the manual list the 2N6456 as a sub.  I
have seen reference to the MRF455A also being used in
HW-104's.

Anyone replaced the finals in a HW-104/SB-104?  What
did you use, where did you get them, any gotchas I
should look out for?  I have found the 2N6456 at RF
Parts but not in a matched quad. So before I spend the
money for repair, let me know what you did.

Thanks for the input in advance.

73's
Roger
KC8OPP


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