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Toroid question...again***UPDATE***
Michael Davis
I re-soldered the 6 "legs" but the problem is still there but less sensitive to bumps. I also added some glue to the toroid to make it more mechanically sound. I am guessing the twists and turns may be shorting to the core. I will leave it alone if this repair works. What is the best way to troubleshoot a toroid? My receiver is occasionally dead until I tap #? toroid, then it "jumps" to life. It remains working unless I accidentally hit that toroid again. It has 6 legs, 3 on each side soldered to/through the board. If I contact/tap each of the legs, there is no effect, so I think the problem is somewhere within the actual twists and coils. Can it be caused by the coil contacting the core and shorting? I am tempted to add some super glue to the coils while it's working and hope it stabilizes and eliminates the problem.
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Michael If you put an ohmmeter across the toroid core you should find that the core itself has quite high DC resistance.? For this reason I would suspect that the problem is more likely to be shorting between turns.? Applying glue might solve the problem but a more reliable fix might be to just rewind the toroid with new enamel insulated wire. Arv? K7HKL _._ On Mon, Jul 10, 2017 at 8:13 AM, Michael Davis <maddmd818@...> wrote: I re-soldered the 6 "legs" but the problem is still there but less sensitive to bumps. I also added some glue to the toroid to make it more mechanically sound. I am guessing the twists and turns may be shorting to the core. I will leave it alone if this repair works. What is the best way to troubleshoot a toroid? My receiver is occasionally dead until I tap #? toroid, then it "jumps" to life. It remains working unless I accidentally hit that toroid again. It has 6 legs, 3 on each side soldered to/through the board. If I contact/tap each of the legs, there is no effect, so I think the problem is somewhere within the actual twists and coils. Can it be caused by the coil contacting the core and shorting? I am tempted to add some super glue to the coils while it's working and hope it stabilizes and eliminates the problem. |
¿ªÔÆÌåÓýYou might test Crazy Glue first, to make sure it does eat the enamel? I like the glue gun, just a dab.? Crazy Glue makes a mess!? Even the "thick Stuff".
Mike, WA6ISP On 7/10/2017 7:44 AM, Arv Evans wrote:
-- Mike Hagen, WA6ISP 10917 Bryant Street Yucaipa, Ca. 92399 (909) 918-0058 PayPal ID "MotDog@..." Mike@... |
¿ªÔÆÌåÓýDoes Not Eat On 7/10/2017 8:16 AM, Michael Hagen
wrote:
-- Mike Hagen, WA6ISP 10917 Bryant Street Yucaipa, Ca. 92399 (909) 918-0058 PayPal ID "MotDog@..." Mike@... |
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