Electronics Forum | Mon Apr 06 11:58:42 EDT 2009 | c111
Jeong Ju-young You touched them all up with an iron? Wow! We have also had similar issues. What I did to prove there was a board problem was paste one & reflow one bare board with the same chem (noclean) we saw the non-wetting condition. Then applied
Electronics Forum | Fri Feb 06 15:12:51 EST 2009 | ccross
You need to base your costs on your labor and overhead rate as well as how much your other expenses are(selling, admin, etc) and profit you want to make. For example (let's use nice round numbers) if you place 10,000 parts per hour and your labor an
Electronics Forum | Wed Mar 11 17:51:22 EDT 2009 | GSx
Thank you so much Dave, by having different lots of PCB received (same Supllier) with suspected and good carbon ink deposit, I found useful to adopt a comparison test among the different lots by usingthe IPC-TM-650 2.4.1 Adhesion , Tape Testing (lik
Electronics Forum | Tue Mar 24 17:14:44 EDT 2009 | bas251
In my experience, before my current employment, I have personally seen damage from the water soluable fluxes left under a BGA. In consideration, I have not seen it from an assembly process where the boards are cleaned thoughly, but I have seen it dur
Electronics Forum | Tue Apr 21 12:48:13 EDT 2009 | bk
ok you verified that the motor was bad. So now i would go back and verify that your voltages are still good on the back of the computer box and on the booster board. If they all check out fine. I would take the mot x board from your working machine a
Electronics Forum | Mon Apr 06 11:53:50 EDT 2009 | ed_faranda
Here are some pictures of the part. I created a profile for this part. I've been in touch with the vendor and he seems to think the profile is too hot. I am waiting for another board from R&D so I can work on it again. If you look at the picture,
Electronics Forum | Sun Apr 12 08:49:12 EDT 2009 | mki
Hello, I bought used QUAD IVc MKII with transport in "as-is" condition, powered it up (without air and PCB on machine) and all axes (X, Y, Z AND T(heta)shows signs of life. Machine is performing HOME positioning self test. I am not familiar with QUA
Electronics Forum | Fri Apr 17 10:44:29 EDT 2009 | rmitchell
Hi, follow up, Thanks to everyone that responded. We finished the build, the sun burst thru the clouds and the birds sang. Well that was a slight exageration. Sorry for lack of detail on the original post, I was frazzled. Since the 0201's were p
Electronics Forum | Tue May 12 01:09:17 EDT 2009 | malmsteen
Thanks for replying Mr BoardHOuse. The product has to be RohS compliance. Surface finished is something that I am still considering and currently looking at either OSP or Immesion Silver. In short whatever combination that can produce high reliabili
Electronics Forum | Fri Jun 19 07:28:56 EDT 2009 | mhunter
Thank you for your responses Davef and Boardhouse. The material used is Iteq Corporation IT-180. I performed more testing yesterday and found the following: I could insert Berg Pins into the assembly at various locations or a Pem. None of these
