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Internal connector in a Fujitsu Stylistic is gone Answered

Hi guys, I kinda need your help here:

I got this wonderful tablet from professionals who were disposing it for some reasons.
They didn't give me a charger so first I just took the hard drive out and put it in my Panasonic CF-19.
https://images.duckduckgo.com/iu/?u=http%3A%2F%2Ftse1.mm.bing.net%2Fth%3Fid%3DOIP.Mbe6a5882752d4fd8f37d47d77ab1967ao0%26pid%3D15.1&f=1

These days I wanted to start drawing with a wacom tablet, and as this tablet is a wacom penabled device, I put the hard drive back inside, removed the dust and fired it, windows 7 booted, buggy because of the new hardware and eventually with proper drivers, everything went perfectly fine, but I wanted to have Debian Linux on it so I put an USB drive with the files to install Debian but the USB thumb drive was not recognised.

I started to search and finally took the tablet apart and after a little troubleshooting, I saw the problem, a connector on the motherboard is unsoldered, I don't know what it is and the numbers on it told me nothing
so I'm here to know if someone knows what it is and where I can find a replacement (I can do hot air soldering and have tin solder paste), here are the implied parts :

https://lut.im/JcXmpH4ok4/K8cJQZs26mA8HNv4.JPG (Usb and Jack board)
https://lut.im/12n4Vwj3vf/KhACs4GMyEjto7ir.JPG (motherboard pads, a bid damaged)
https://lut.im/YeMMbdvnmG/wH9etmovCICXv8kC.JPG (connector, pic 1)
https://lut.im/mX9uNvCLtj/9lg0mAziA5HfIIHy.JPG (connector pic 2)

also I belive that it will be hard if not impossible to find a replacement so if you have ideas to connect back the USB and audio Jacks to the tablet, I was thinking about soldering thin wires on the pads but they are very tiny.

Also, if you know some good hacks/enhancements for these devices, I would be interested

Discussions

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mpilchfamily

3 years ago

Sorry not clicking those links. You need to upload and post the pictures here.

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nazmo76mpilchfamily

Reply 3 years ago

Images added to instructables, why don't you like file links ?

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mpilchfamilynazmo76

Reply 3 years ago

The source of the links isn't a recognized host so i'm not touching it. Never just click any old link online. You never know where it will take you or what it will put on your PC.

Doesn't look like there is much you can do to fix this. The traces on the board have been torn off and are still on the connector. You'll have to desolder it all and try to bridge the gap in the traces. Problem is the traces are so small it will be a difficult job without the right solder tools. Unless you already have a good vacuum pump desoldering iron, soldering paste, and a soldering heat gun. Chances are if you had that kind of equipment you would already know how to fix this. Afraid it's a lost cause at this point.

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nazmo76mpilchfamily

Reply 3 years ago

OK, I have a hot air smd soldering pen, or at least it's on it's way to france but I'm beginning in SMT electronics, (I always been with good old through hole componnents but I can't ignore anymore that SMDs are the future so I'll have to start one day or another), but about the part, for you I can reuse it even though half the legs are gone ?

Thanks in advance

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mpilchfamilynazmo76

Reply 3 years ago

With careful work, a decent magnifying lens and some fine wires you can bridge the broken contacts from the connector to the board. But you will need a fine tip on a soldering iron to do it. Otherwise you'll melt the connector. You may need to look around and buy a new connector. What you have is a Board to Board connector. You'll need to figure out the pin pitch, number of pins and size of the mating connector in mm. Then you can look the part up here.

http://www.molex.com/molex/products/family?key=sli...

With some finagling you should be able to request the needed part from them a a sample. I was able to do that in the past and Molex sent me a couple of samples for free.

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nazmo76mpilchfamily

Reply 3 years ago

I'll measure all of that and contact them, I already got samples from
several places as a student (Coilcraft and AMS for example) and I hope
that molex will be as sympathic as these companies

Thanks for your help, I'll keep the post updated as the fix goes

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nazmo76nazmo76

Reply 3 years ago

Well, It seems that they don't want to respond me :'(

I managed to make a diagram of the connections implied in the connector, happily there is a lot of ground pins and the 4 data pins (2 usb ports x 2 pins) seems to be on the side of the original connector that wasn't damaged so I'll try to resolder it under a binocular microscope/magnifier.

I'll keep you updated on the progress I make

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nazmo76nazmo76

Reply 3 years ago

Washed the contacts with soldering copper wick, some damage is here as on the first images but I belive it's doable, even with the damaged connector :)

I come back when I got some news