[Hallicrafters] SR-2000 post production change

[Jim Liles]

Good morning:
We have discovered a design flaw in the final configuration of the SR-2000. 
Capacitor C156A is the solo loading cap, bearing 100% of the unloaded 
current when using the 10 meter band and bears more than 1/2 the load when 
using the 15 meter band.  Every SR-2000 that we have inspected has 
experienced over heating at that connection.  To check your SR-2000 simply 
use a mirror and flashlight to confirm that the connection has actually 
melted the solder or worse.  This connection is used on all bands but solo 
on 10 meters  The best description of the effect is the radio is squirrely 
when loading and tune up as a result of the unreliable solder joint.
The fix is to remove the capacitor by clipping the wires which can be 
spliced using #16 id copper tubing from a hobby shop, sliding the lock ring 
back on the tuning shaft --- it is not in a groove, slide the coupler to the 
front,  remove three mounting screws and tip the rear of the cap to the left 
of the radio.  The existing wires in the final cage will not solder with out 
sanding, too many years on the tin.  I would replace those on the cap and 
sand the partners before inserting into the copper couplings when 
reinstalling.  To fix the connection, find a short, I believe 10/32 screw, a 
piece of copper strap, and some silver base solder.  Tin the strap then 
gently screw the copper strap to the phenolic holding it to the stator 
phalange.  Reinsert the removed or new #16 wire into the original tab and 
wrap the copper strap over the wire and silver solder all.  It will be clear 
when you see the connection up close.  We made this change and after several 
hours of operation on 10 meters the joint was cool.  If you need 
clarification or photo's  please email or call 847-571-8420   Kindest 
regards Jim K9AXN