[Elecraft] RE: KX1 assembly/repair vulnerability & recommendation

[tomcarolbrown]

<snip
Ron,
good ideas & reminders, thanks...
Tom, N0SS, used some "fish paper" - the tough fiber paper often found in
motors and other electrical devices - to insulate the 30 meter module from
accidental contact with the case. He started doing that before the spacer
pads were added.

and...
I used some heavy-duty clear plastic tape - the sort provided for sealing
packages for
shipment. It has a very high resistance to puncturing. It's there strictly
as a safety feature in case I should have the same bad luck with the spacer
pads that you did.

and...
Speaking of short circuits, it IS important to check for a 12 v line short
to ground after reassembly to make sure you haven't lost the shoulder washer
on the final transistor mount or otherwise created a short between the final
transistor metal lug and the case.
<snip

I've noticed the same thing. My final transistor doesn't want to lay exactly
flush such that at disassembly, the heat sink raises just a tad and the
washer can very easily shift in re-assembly. It took me several trys in
reassembly before the washer reset properly and I could complete the
closeup. I've learned to ring it out with the ohm meter prior to final
tightning. I wonder if there is an adhesive one could tac the washer to the
transistor heat sink so it can't shift?

Tom W0MFQ
KX1 # 307