[Hallicrafters] SR-150 relays

[Jim Liles]

SR-150 relay problem:
It appears that the contact point insulating material on relays, K2 and K3 over time warp causing the NC contacts to move toward the OP contacts leaving almost no clearance or throw.  We have had incidents of serious damage to SR-150's as a result and many intermittent failures.  They are simple to adjust with a little patience.  Recommend checking them for visible warp or throw before they make smoke.  Kindest regards Jim K9AXN