Electronics Forum | Wed Oct 18 07:51:14 EDT 2006 | davef
Look here: http://www.circuittechctr.com/ As a low cost approach, use copper foil purchased from a stained glass window hobbyist shop. Cut foil pieces to size with a sharp knife. Epoxy the pieces in place of the damaged pads. Tin and then solder th
Electronics Forum | Mon Oct 30 03:18:09 EST 2006 | geb
Hi Mika, Thanks for your reply. We've managed to narrow down the fault to the control board (long rectangle one in front of the camera). It turned out to be a logic IC that had blown MM74HCT244N (U17 I think). A circuit diagram would be useful beca
Electronics Forum | Wed Oct 25 12:14:35 EDT 2006 | GS
Yes SWAG you are right, heat could be dangerous for the parts to be removed. Any way it is not so easy to remove epoxy adhesive (3609) once it is cured. By heating the adhesive (over his TG temperature)it gets softened and by using a mec
Electronics Forum | Wed Oct 25 11:33:44 EDT 2006 | bill
I have inherited a SonoFlux 9500 spray fluxer. It appears to have never been used and was build in 1999. It is missing the nozzle and a couple of other parts. Would it be worth it to get this thing up and running to replace a foam fluxer? Does an
Electronics Forum | Thu Oct 26 04:36:05 EDT 2006 | aj
All, We have a Ultrasonic Welder "Sonotronic 35/1200" manufacturer M.E.E. in Johanesburg. The machine was here when I started and we use it probably once or twice a year. Basicall welds a Plastic key housing together,. I have no manuals for this m
Electronics Forum | Fri Oct 27 07:39:54 EDT 2006 | jdumont
Just wondering if anyone has seen this problem before. We are using a 456 ball FPGA and during installation on our BGA rework machine the corners curl up causing opens there. The part was profiled with our KIC and matches the paste MFG spec. Is this
Electronics Forum | Fri Oct 27 08:53:25 EDT 2006 | russ
I thjink you should bake these parts for 24 hours at 125C I used to have this problem and I even think it was the same package to be honest. Since we started baking all BGAs for rework process regardless of "condition of storage" we have increased
Electronics Forum | Mon Nov 06 10:51:23 EST 2006 | SteveH
We have 2 PVA2400 4 axis selective spray machines that we use to spray Humiseal 1B31 and 1A33. They take a bit of programming to get right, though this is easy to do, but do the job OK. Another to consider if you need the 4 axis of movement would b
Electronics Forum | Fri Nov 17 14:26:17 EST 2006 | billwestiet
I am personally in RI, but my HQ is in San Jose, CA. I can get you more information on the machine(s) and configuration you have though, if you are interested. We are also one of the few Used Equipment guys that will sell on terms and stand behind
Electronics Forum | Wed Nov 01 07:41:39 EST 2006 | billyd
I'm reworking lead free BGAs now, on a Conceptronics Freedom 3000. I use flux only (no-clean, Indium) all the time, with no issues. If you go to paste, you also understand that you still have to hit the same temperatures as with flux, as the solder i
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