[solved]Suggestions for new videos (silk screen printing/BGA reballing)

[Protoid]

Hello Dave,

Thank you very much for these high quality videos, it is very interesting.

I have 2 ideas of topics for new videos.

first is :

What is the simplest and cheapest way to reball BGAs, Chipsets and GPUs from laptop motherboards,  i am talking about reballing and not reflow.
I see you have a very nice cheap hot hair gun, may it be used to accomplish it ?
It is easy to find over the net (especially Ebay)  cheap kits for reballing containing tools, a wide panel of soldering masks and a ball tube.
Most of videos are showing techniques using quite expensive tools as infra-red solder station or completely odd-job systems as paint remover guns and mashed paper which are tricky.
Doing reballing can fix most of considered dead actual laptop computers. Motherboards are surprisingly specific and terrific prices.


Second is :

What more beautiful and professional on a prototype circuit than have a total silk-screening of the board about components symbols and references, unluckily for most of us it is inaccessible dream, i thought it until the time I found on the net this revolutionary new items, Stencil Pro and PhotoEZ, I've never used them, is it a serious way to silk-screen electronic boards ? It would open new horizons to all of us as small creators we are.

Thank you again, your way to introduce topics and detail their functionalities is very good.

good continuation.

Best regards.

Ruddy

[Protoid]

Hello

It looks like no one is interested about these very actual topics ?

Am i the only one to care about silk screening boards on prototype, I think it looks so clean as introduction to a new project to have a very detailed nice board when you meet an enterprise engineer.

And yes finally most of peoples prefer to waste all their money to buy new computers every couple of years,  big thumbs up to the programmed obsolescence, don't fight it to don't make industries nervous 

[sleemanj]

I doubt very much that Dave has ever re-balled, and certainly this isn't the sort of video he'd be doing.  This isn't really the right forum to be looking for information about this.  Maybe try asking over at dangerousprototypes.com, Ian might have some information as this sort of on-the-cheap procedure is done in chinese markets often and he will no doubt have seen it done. 

As for silkscreening, Dave doesn't etch his own PCBs (and only a small number of the posters here do), he uses one of the many cheap pcb prototype services.  Again, EEVBlog is not the right forum, you'd be better asking on the Homebrew PCBs group at Yahoo, https://groups.yahoo.com/neo/groups/Homebrew_PCBs/info - I will add that using an actual silkscreen to do the silkscreening would be a massive load of trouble and expense for a prototype.  Better to just toner-transfer a silkscreen on probably.  Or if you really need a proper silkscreen, then just pay a few dollars and get the proto boards made properly by a pcb protoype service.

[Protoid]

Hello

Thank a lot for the good links, especially dangerousprototypes, i hadn't yet much time to spend on that website but it looks very interesting anyway.

Yes right, all usual techniques are very expensive and quite difficult to implement, but i found it http://www.store.cbridge.com/pc/PEZ-KIT/KIT-PEZ-001/Basic+Starter+Kit+with+PhotoEZ i saw some introductions over youtube, it looks seducting.

They sell a kit for 38us$ which contains photosensitives silk sheets which react with only sunlight and it includes colors and tools.
It doesn't needs specific and expensive tools such frame, photo-chemicals, or high power lights spots, high pressure water hose. They show a demo of silk screen for pcb, but not for reference marks, it may be possible to do as well.http://www.cbridge.com/howtos/printedcircuitboard.shtml
Then i was expecting some geeks here knew it already. 

I found this by this video which made me interested  about it

Thank you.

[Protoid]

In fact Dave has ever made a video with his rework station Atten 858D which shows the way to dismount BGAs, that was exactly what i wanted , because the reballing itself is not that difficult, but only the way to solder and disolder BGA is terrible without appropriate tools.


Thanks and greetings again to his good videos which guide us in buying tools and building correct circuits.

[Protoid]

Good evening

I just found this very good video about reballing technic on PS3, it is interesting for beginners.

http://dangerousprototypes.com/2013/01/26/app-note-reballing-bga-devices-tutorial/