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mattconway727
(@mattconway727)
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Joined: 3 months ago
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17/06/2020 12:15 pm  

I've honestly never seen this before. As I was about to put the new charging flex on, I noticed that there were some missing pads on the logic board. And it's not just one, there's 9! So do I need to run jumpers for all of these? How would I even go about locating those points? I have about 4 years exp. with repair but only around a year experience with micro soldering.. I am just starting to be able to understand schematics to a certain extent and I use Phoneboard for the most part. This isn't for a customer or anything.. it was an old one i had laying around. Any advice would be very helpful. Thank you so much!

 

 

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Mike
 Mike
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17/06/2020 12:25 pm  

You'll need to get zxw tools and see which pads are needed and which aren't.  As far as I can tell, there are no NC pads, but there are a lot of ground pads.  You should fix all pads unless they are NC.  Here's a pic from zxw tools for the ipad 5th, which uses the same charge port as the 6th gen.

Screen Shot 2020 06 17 at 12.24.39 PM


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mattconway727
(@mattconway727)
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17/06/2020 5:03 pm  

@admin

Thank you SO much! I'm going to give it a shot and I'll update with pics in just a few. 


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mattconway727
(@mattconway727)
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Posts: 17
17/06/2020 8:41 pm  

@admin
 

update: 

I successfully ran jumpers, but before I could celebrate too much, I realized I was out of solder mask! Is there anything i could use as an alternative? Nail polish.. or something like that? If not, is the solder mask absolutely necessary for something like this? Thank you so much for the reply!

Screen Shot 2020 06 17 at 8.40.52 PM

 


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Mike
 Mike
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17/06/2020 8:46 pm  

It's not absolutely necessary, but you'll need to be careful.  Just diode mode the pads before, write down the values, and then measure the again after the charge port is on to make sure that they soldered correctly.


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mattconway727
(@mattconway727)
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Joined: 3 months ago
Posts: 17
18/06/2020 11:51 am  

@admin

 

Well, I'm still working on it. It's not as easy as it seems... I think I'm going to have to run more jumpers now b/c I thought I had it on there pretty solid, but I guess I moved it the wrong way and it came back off - with more pads. So I put it away and took a break. It's morning and I'm going to take a fresh look at it.. and see where I should go from here. Actually, I'll go ahead and take some pics and post them here:

I think one of my issues is not really having the right equipment too. My set up isn't exactly professional at the moment.. but I'm still just learning and getting things as I can. I've ordered a few things from the store on this website and I'm actually really happy with everything. I'll continue to post updates - pray for me lol

 

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Mike
 Mike
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18/06/2020 3:43 pm  

oh my, looks like you're having some fun... 😀 


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matthewdgreene
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Posts: 15
20/06/2020 7:45 pm  

I used that same hot air/solder station when I first got started. The hot air works okay until the fan dies. You can replace the fan with a high speed 24 V 5015 fan. 

In my experience, the iron works okay, but it takes longer than the temp reading on the display indicates. When the iron says it's reached temperature, give it a couple of more minutes. 


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mattconway727
(@mattconway727)
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Joined: 3 months ago
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28/06/2020 7:21 pm  

@matthewdgreene

Thank you so much for the feedback! I'm really just starting to get my feet wet with the board level/microsoldering side of repair and it's really great to hear from people who have been doing this for a while. 


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mattconway727
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28/06/2020 7:27 pm  

Also, I have kind of put the ipad repair on hold.. I kind of dug myself into a pretty deep hole on that one. I know it's going to take me some time to get right so I decided to practice some more before working on this one any further for now. I may give it another try in a few days... I definitely need to practice more though. And I see now the value of having a good microscope. Using my DIY 'phone + walmart toy micro lense' isnt very sturdy.. shakes alot, and doesn't give me much working room. I'm trying to find a decent starter stereo microscope.. Amscope and Parco seem to have some good ones but before I spend $300-600 on something, I want to make sure I'm spending it wisely. Thanks again for all the feedback. I really do like the "family-like" atmosphere that the microsoldering community seems to have - especially when it comes to taking care of the newcomers. It's a great feeling to be a part of something like that.


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matthewdgreene
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01/07/2020 4:45 pm  

@mattconway727

Again, speaking as a person who started this on a budget, here's something to consider. 

Video of your scope is nice, but in the short term, you can save a fair amount of money by going with a used binocular stereo scope. I personally am using a Bausch & Lomb Stereo Zoom... 7, I believe. I have it on a big heavy boom. My situation is a bit different, as my day job is in science, and I just come across things like scopes periodically. 

With that said, you can can get the same scope, just the head, for under $50 on eBay. Admittedly, you'll have to come up with a mounting solution, but given that you're micro soldering, I'll assume you're reasonably resourceful. 🙂 

While you're on eBay, you might consider getting yourself a 0.75X Barlow lens that will fit that scope, and a cover to protect the lens portion. 

 


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mattconway727
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01/07/2020 6:49 pm  

@matthewdgreene

 

Thanks Matthew! I am looking into that now.. I found a B&L Stereo 4 head for around $50, including shipping.. and a B&L .5 barlow for $60 (if I remember correctly).. I messaged the owner of the post for the barlow and asked if they knew if it would fit the 4. Hopefully I can figure out how to make a sturdy stand.. I'm sure it would need to be somewhat adjustable. Anyway, thank you for the advice. I will update once I know more.


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