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MacBook solder repair to metal spikes?

I had some repairs done to the iSight connector on my Macbook Pro 17 circuit board.

I noticed the left copper wire brushes up against those two metal spikes poking through.

Do they have to stay touching or do they look like placeholders? I can solder the wire to those spikes, they bounce off from time to time.

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They need to be tied down not left in the air or shorting across frame/test pins used in manufacturing. I always use PVC or Teflon coated wire often using different colors to help express what its function is. Power Black/Red, switch lines Yellow, and Blue/Grey for everything else. I only use bare copper when I'm following the trace's path (soldered down). Here's a good source: Mouser - 26 AWG Hook-Up Wire. I use solid core when possible.

Sounds like you'll need to do clean up here ;-{ I hope you didn't pay to much for the repair.

Update (12/07/2017)

Patching wire routing is an art form and you do need to tie it down. Here's an example of a well done job:

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Enamel/Epoxy coated wire is designed for coil wrapping where you are trying to get the wire as close as possible. It is not really suitable for patching. I know people use it and in some cases its likely the only sized wire you can fit. But you can't always tell where the coating ends and the bare copper starts. Many years ago you could get green coated wire so it was more pronounced (it looked brown). I don't know if you can even find it any more. In some ways its harder to work with as you need to scrape off the coating and the method used can effect the strength of the wire.

Solid wire in any form can suffer fatigue just from a small nick and how the wire is stressed. The wires insulation can also not have the needed insulative effect needed. Yes, shorting is the biggest issue, but its also the signals leakage/crosstalk you need to also consider.

When I was going to school we used the terms 'Outer-World' and 'Inner-World' it made the two spaces more understandable:

Outer-World

In the digital world here we have the usual mechanical & physical issues in placement of the wire/s routing and we also need to consider the fragility of the patch.

Inner-World

The signal or current load traveling within the line/s. The current load will effect the size of the wires gage needed and if we need a solid or stranded wire. We also need to conceder the issues of signal integrity and leakage/cross-talk. All of which can effect the routing of the wires.

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Thank you for an honest in depth answer, would you reccomend gluing it down?

durch

Dan, These wires are coated, I had to run wires to the SMC data lines for webcam. Do to that size, using wires that big are not possible and the customer was charged normal rates. There was nothing wrong with what was done here.

durch

I would have used Spaghetti Tubing for such a long line and glued it down staying as much as possible on the ground plain and crossing sensitive signal lines at 90 to 45 degrees.

durch

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I'm the tech that did this repair!!!! Those are enamel coated wires. You have nothing to worry about.

Update (12/06/2017)

Just to restate and defend my repair. 26 AWG IS WAY TO BIG! The pins that these wires are soldered to are very small and every pad for for the isight connector was torn off. The wire used is enamel coated and will not short on any components. The enamel is difficult to burn off with my soldering iron let along rub off from chaffing on those ground pins. I have done many board repairs where wires are run across the board and they do not come back. Keep in mind the repair above is covered for 1 year.

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There is smaller sizes but you also then need to consider the signal.

As you get smaller the voltage drops in proportion to the distance the signal needs to travel. If its a current flow then resistance of the smaller gage wire can effect it (solid) this is where a multi-stranded conductor is better. But not for high frequency signaling! Read up on the skin effect of voltage and high frequencies running on a conductor.

I'm sorry you feel slighted here. Take this as a learning experience to improve your craft.

Hopefully you still have my card email me if you want to talk deeper into the subject. I'm sure we can make a dam good brain surgeon out of you yet! ;-}

durch

I think I still have your card Dan, Ill email you .

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the wire more than likely has an enamel coating and the only electrical contact would be where it is soldered

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Even still the coating is very thin! I would never route patch lines like this!

durch

I have done that all the time and they never come back. The enamel may be thin, but It will not wear off. Trust me.

durch

Its not the wear alone its the placement and lack of anchoring. Even enamel coated wire does wear over time when left rubbing loosely against something.

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Ben Kleschinsky wird auf ewig dankbar sein.
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