Dayton 8uf capacitor wire broken

[Moonwatcher]

Just wondering if it's possible to use a cap with a lead that is broken, down to the quick. Maybe gouge out enough material around it to solder in a lead? This is for a KLH 17 crossover calling for 8uf caps, and I was excited to find this one in a drawer, an 8.2, which I figure should work--if I can somehow attach a wire to it.


Thanks!

 

[alteclipsch]

I'd only try that jf I could test capacitance after the repair. Not worth the risk to a tweeter that is becoming less common these days.

 

[egellings]

I'd consider just buying a replacement part for that.

 

[Spe@kerBox]

I have done this in the past in emergency situations. You can scrape some the the plastic surrounding the stub away and solder a new wire on. The trick is then soldering that new wire to something without melting the wire off the stub. As mentioned you will need to measure the capacitance when done.

 

[Spe@kerBox]

It doesn't hurt to put some glue over the newly soldered stub. Gives it stability.

 

[RTally]

Metallized film caps are very sensitive to heat. Soldering that close to the guts will allow lots of heat to flow where it is not wanted, potentially setting up the cap for failure. If you do solder a lead to the stub, use a long, tinned lead with a hot iron applying heat for a very short time.

I would not try it, but if you do, as suggested by alteclipsch, testing it before using is a very good idea.

 

[alteclipsch]

I'd consider just buying a replacement part for that.

Those Daytons are cheap, so I also would just replace it. As to heat, I always use a mosquito clamp (hemostat) as a heat sink on the cap wire where it enters the cap before soldering.

 

[egellings]

I use my roach clip for that same function.

 

[RTally]

Those Daytons are cheap, so I also would just replace it. As to heat, I always use a mosquito clamp (hemostat) as a heat sink on the cap wire where it enters the cap before soldering.

I use my roach clip for that same function.

Using a heat sink is a good practice. The best place to position the heat sink is between the heat source (soldering iron) and the heat sensitive component (the cap). But in this case, the stub is too short to have a heat sink between the cap and where the lead needs to be soldered.

 

[alteclipsch]

in this case, the stub is too short to have a heat sink between the cap and where the lead needs to be soldered.

Another reason to replace it.

 

[larrybody]

A Dayton precision is about $6.50. A Solen maybe a dollar more. Replace it.

 

[Lavane]

It sucks though when you only need one part and shipping is going to cost as much or more than the part.

 

[goodolpg]

A Dayton precision is about $6.50. A Solen maybe a dollar more. Replace it.

Shame that shipping might cost more than the cap.
Sometimes you have to bite the bullet.

 

[RTally]

It sucks though when you only need one part and shipping is going to cost as much or more than the part.

When I order caps, I always include extra of the common values, e.g., 1, 2, 4, & 10 uF. I buy enough vintage speakers that they don't last long.

 

[Lavane]

When I order caps, I always include extra of the common values, e.g., 1, 2, 4, & 10 uF. I buy enough vintage speakers that they don't last long.

I try too. I did it with my last big order. But it never fails you miss one odd part in a big order. Its almost always some odd value part.

 

[alteclipsch]

When I order caps, I always include extra of the common values, e.g., 1, 2, 4, & 10 uF. I buy enough vintage speakers that they don't last long.

Exactly. I have a whole bunch of 1, 2, 4, and even some 4.7 since I've seen so many of them. Add em up and get any value you want.

 

[teal'c]

Shame that shipping might cost more than the cap.
.

Would shipping cost more than a replacement tweeter?

 

[goodolpg]

Depends on the tweeter I guess.
Who mentioned tweeters?

 

[Moonwatcher]

I have done this in the past in emergency situations. You can scrape some the the plastic surrounding the stub away and solder a new wire on. The trick is then soldering that new wire to something without melting the wire off the stub. As mentioned you will need to measure the capacitance when done.

Thanks, I will try this, and luckily I just bought a meter a couple months ago.

 

[Moonwatcher]

Shame that shipping might cost more than the cap.
Sometimes you have to bite the bullet.

Thanks--this time, I think it was more an issue of impatience. I will probably try the quick fix but go ahead and buy a new one too.