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latching relay in IC-756 PRO

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

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Jamie
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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
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Jeff Liebermann

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