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| 09:10 | Bertl | morning folks!
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| 09:11 | toxitobi | morning Bertl
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| 21:38 | skinkie | How difficult is it typically to solder an smd-micro-usb connector
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| 21:38 | skinkie | would this only work with hot air?
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| 21:44 | Bertl_oO | no, it is rather simple if you know how to do it
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| 21:44 | skinkie | would you first mount the two edges
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| 21:44 | skinkie | and then the i/o?
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| 21:44 | Bertl_oO | really depends on the part, do you have a link?
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| 21:44 | skinkie | https://opencircuit.nl/Product/10811/Female-micro-usb-connector
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| 21:45 | skinkie | just a regular thing
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| 21:45 | skinkie | trying to repair a kobo reader
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| 21:45 | Bertl_oO | there is no such thing as a 'regular' smd-micro-usb :)
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| 21:45 | skinkie | I'll battle that when I end up there ;)
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| 21:46 | skinkie | but typically, i guess the typical tinning the connector
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| 21:46 | Bertl_oO | I don't see who is manufacturing that one, but it seems to have two pins which go into the board
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| 21:46 | Bertl_oO | so it will be held in place there already when you place it
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| 21:47 | Bertl_oO | you can then easily solder the five USB pins
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| 21:47 | Bertl_oO | and fix the connector via those two holes in the board
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| 21:47 | skinkie | and would you tin the pins first?
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| 21:47 | skinkie | or only flow the solder from the board
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| 21:48 | Bertl_oO | tinning would complicate things, because the connector would not be even on the PCB
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| 21:48 | Bertl_oO | what you do is put a lot of flux on the pins and pads
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| 21:48 | Bertl_oO | and then add plenty of solder till all pins are connected (doesn't matter if you bridge them or not)
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| 21:49 | Bertl_oO | once that is done, remove the excess solder via some desoldering braid (careful not to remove too much)
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| 21:49 | Bertl_oO | again flux helps a lot there
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| 21:50 | skinkie | I'll see if I am able to do it :)
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| 21:53 | Bertl_oO | all the image I found online for 'a' kobo reader seem to show very different connectors
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| 21:53 | Bertl_oO | can you take a picture of the open device where you want to replace the USB connector?
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| 21:59 | skinkie | @Bertl_oO http://stefan.konink.de/kobo.jpg
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| 22:04 | Bertl_oO | oh-my-god, what happened to that one?
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| 22:04 | skinkie | when I say a girl tried to fix her kobo
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| 22:05 | skinkie | and her bf asked me, can you fix it...
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| 22:05 | Bertl_oO | then that would sound like sexism ...
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| 22:05 | skinkie | the amount of glue, solder... and probably tears were present :p
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| 22:06 | skinkie | actually, when a girl actually attempts to fix this kind of things on her own
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| 22:06 | Bertl_oO | okay, you know how to solder (i.e. the basics?)
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| 22:06 | skinkie | that already gets some compliments from me, because at least that is an attempt
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| 22:06 | skinkie | yes, i know how to solder ;)
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| 22:07 | skinkie | i got basic flux, but not the liquid one
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| 22:07 | Bertl_oO | good, can you carefully remove the solder from the pads on the PCB?
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| 22:07 | Bertl_oO | with flux (tacky one is fine, I use it for almost everything)
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| 22:07 | Bertl_oO | and some desoldering wick/braid
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| 22:08 | Bertl_oO | keep the temperarute as low as possible
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| 22:08 | Bertl_oO | and make a photo of the pads once they are cleaned up
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| 22:08 | Bertl_oO | (you need to do that anyways)
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| 22:09 | skinkie | the point is, that old connector is really one big mess
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| 22:09 | skinkie | that is the reason i ordered some other ones
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| 22:09 | skinkie | or would you suggest to recover that?
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| 22:09 | Bertl_oO | yes, forget about the old one, but you have to find a new one which matches the land pattern
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| 22:09 | Bertl_oO | and at the first glance, the one you pasted does not match :/
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| 22:15 | Bertl_oO | https://c1.staticflickr.com/9/8050/8442835400_f8f9e1c18d_b.jpg this is how the connector probably looked like before
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| 22:16 | Bertl_oO | it is a kobo glo, no?
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| 22:17 | skinkie | i wouldn't be surprised if it is a glo
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| 22:18 | skinkie | but the board looks different
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| 22:18 | Bertl_oO | the board is from the mini
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| 22:18 | Bertl_oO | the best picture I found from the glo PCB is blurred like hell
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| 22:18 | Bertl_oO | http://erkinson.altervista.org/de/kobo-glo-smontaggio-aumento-memoria/
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| 22:19 | Bertl_oO | roughly in the middle of the page
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| 22:19 | skinkie | http://stefan.konink.de/kobo-con.jpg
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| 22:20 | Bertl_oO | okay, as I suspected
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| 22:21 | Bertl_oO | the one you linked won't work with that
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| 22:21 | Bertl_oO | what's on the other side of that board (where the connector is?
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| 22:23 | Bertl_oO | https://www.sparkfun.com/datasheets/Prototyping/Micro-USB.pdf
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| 22:23 | Bertl_oO | that one might work as a replacement
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| 22:27 | skinkie | i get those replace usb things in two days
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| 22:27 | skinkie | see if that fits or not
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| 22:27 | skinkie | then search for other
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| 22:27 | Bertl_oO | at least in the picture, they have pins going down into the PCB
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| 22:27 | skinkie | doesn't work... lets see if i can make this glo the first qi-wireless charging one
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| 22:28 | skinkie | http://stefan.konink.de/kobo-backside.jpg
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| 22:29 | Bertl_oO | excellent
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| 22:30 | Bertl_oO | as the other side doesn't have any problematic components on the edge of the PCB, I would suggest heating the PCB from the bottom (e.g. with a ceramic heating element or similar) to about 100-150 deg celsius
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| 22:30 | Bertl_oO | this will simplify rework a lot and keep the pads on the PCB :)
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| 22:32 | skinkie | will that really work?
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| 22:33 | skinkie | will that melt solder on the other side?
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| 22:33 | Bertl_oO | yes, it will work, it is all about the temperature difference, and no, it will be below the melting point for the solder
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| 22:34 | Bertl_oO | the trick is to reduce the difference you have to overcome with the soldering iron
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| 22:34 | Bertl_oO | if the PCB is at room temperature, you need to get the pads quite hot to reach the 200-220 deg celsius for the solder
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| 22:35 | Bertl_oO | and the large thermal pads (those you did not get cleaned easily)
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| 22:35 | Bertl_oO | will draw away heat very fast
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| 22:36 | Bertl_oO | heating the PCB up to 130 deg celsius already gets you half the way and thus allows you to use lower temperatures for soldering without harming the PCB
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| 22:37 | skinkie | I see your point
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| 22:37 | Bertl_oO | that's why rework stations have bootom heaters :)
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| 23:15 | se6astian | good night!
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