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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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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 |
#2
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latching relay in IC-756 PRO
On Sun, 09 Sep 2012 18:01:00 -0400, Jamie
t wrote: 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. 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: http://802.11junk.com/jeffl/hp2200/hp2200.html 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 The solenoid core is becoming more magnetized. Maybe now is a good time to sell the radio One lousy relay and you're ready to junk the whole radio? -- Jeff Liebermann 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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