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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.


 

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.



 

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You 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:
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.


-- 
Mike Hagen, WA6ISP
10917 Bryant Street
Yucaipa, Ca. 92399
(909) 918-0058
PayPal ID  "MotDog@..."
Mike@...


 

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Does Not Eat


On 7/10/2017 8:16 AM, Michael Hagen wrote:

You 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:
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.


-- 
Mike Hagen, WA6ISP
10917 Bryant Street
Yucaipa, Ca. 92399
(909) 918-0058
PayPal ID  "MotDog@..."
Mike@...

-- 
Mike Hagen, WA6ISP
10917 Bryant Street
Yucaipa, Ca. 92399
(909) 918-0058
PayPal ID  "MotDog@..."
Mike@...