[R-390] R390A antenna relay troubleshooting

[Larry H]

Peter,  I've attached some pictures I have of the relay.  The 3rd one shows the 4 screws holding relay in place.  The 1st shows the armature that moves the contacts inside, 2 on 1 side and 1 on the other.  The 2nd shows the contacts that are operated with the cover plate off.  
There might be something preventing the free movement of the armature.  It's possible that the electromagnet core has become magnetized.  If so, it can be demagnetized by applying low voltage ac to it or reverse the dc to it for a short time.  If it only takes a slight pressure to release the armature, then perhaps the spring leave tension from the contact springs is not strong enough.
Regards, Larry


   
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