latching relay in IC-756 PRO

Sep 09, 2012 1 Replies
J

For the last couple of years or so, I've had a sticky audio relay that most of the time does not engage on this rig, so I don't any audio to the speaker in the radio. It never bothered me that much because I have the rig connected to the computer and thus, I just use the computer to listen to it. Common problem with this rig in earlier models I guess.



Once in a while it would turn itself on "Click" after some time of being on.. For the last 3 days of so, it has been coming on at boot up every time and staying there. Maybe I've worn off the sticky edge that has been holding it up :)



Maybe now is a good time to sell the radio :)



Jamie



Vote
Twitter Facebook LinkedIn
J

As I vaguely recall, the problem was that the relay tended to get magnetized. Two possible solutions.

  1. Pry the relay open and put a thin piece of mylar tape between solenoid core and the armature.
  2. Remove the relay, and degauss the solenoid core with a tape head demagnetizer. You can do the demagnetization trick with the relay still in the circuit, but disconnect the at least one lead from the coil. Shorting the coil with a clip lead might also work, but I've never tried it.

I've never had to demagnetize a radio relay, but I've certainly had my share of similar problems with HP printers:

The solenoid core is becoming more magnetized.

One lousy relay and you're ready to junk the whole radio?

Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558
Vote
Twitter Facebook LinkedIn

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required