Electronics Forum | Mon Apr 23 17:03:14 EDT 2007 | Theresa Spear
Thank you all for your feedback. Our backside are 99.9% with passive components. However, we do have a lot of through hole components on boards. To go totally selective soldering the equipment can be quite expensive. Most of the time, we left the com
Electronics Forum | Fri Apr 27 17:51:26 EDT 2007 | chrisgriffin
It appears a disgruntled employee has sabatoged my Sapphire solective solder. Along with cut ribbon cables, I think some jumpers were removed from the system board. D.O.M: '98. I was hoping that some nice person could take a picture of the system b
Electronics Forum | Tue May 01 06:54:22 EDT 2007 | LC
Hi, We are encountering BGA problems where it dislodge from the board. Some are just by normal handling and some are results from drop test about 15 cm high. We have checked our profile and they are in accordance to the BGA recommended reflow profil
Electronics Forum | Thu May 03 09:02:31 EDT 2007 | realchunks
Hi LC, Where are you getting your profile from? Are you actually attaching t-couples to the board? For BGAs the best place to measure is from the center of the device. This means drilling a hole in the board and placing the t-couple thru the hole
Electronics Forum | Mon May 07 10:27:40 EDT 2007 | colormaker
The spray bottle puts more flux on the board but I am not sure how to measure ? I just got the Novastar 12S and its very difficult to set up. When I fix one problem another one show up. When I do get good results I dont make changes and then after a
Electronics Forum | Mon May 07 11:08:13 EDT 2007 | gregoryyork
Are the pallets hot and killing the foam head as they pass over or is the air pressure on the air knife toi high travelling back along the board killing the foam. If these are OK make sure you have sufficient back flow onthe wave and you are draining
Electronics Forum | Fri May 11 17:19:21 EDT 2007 | colormaker
Authough your response is harsh I tend to agree with you. I bought it used and was told by others at the time its a workable machine. Any suggestions on a machine for 40 boards an hour ? I run 400 boards a week and like to run the solder wave on wee
Electronics Forum | Fri May 11 06:45:57 EDT 2007 | jdumont
On some of our boards we cut the clinched leads with an old Q Corp cutter. Works fine as long as the blade is sharp and the lead isnt bent against the board. Youll know when you go to far on the clinch because the mass lead cutter will begin to start
Electronics Forum | Mon May 14 16:20:55 EDT 2007 | realchunks
Hi C-Dig, Are you testing circuit boards on a static mat? It could be conductive, which might short things out. I've seen this happen to our bench techs. You might want to look at getting a set of helping hands. The gizmo that actually holds the
Electronics Forum | Tue May 22 16:07:31 EDT 2007 | francitj
We are doing a field study to test the placement accuracy and calculate cpk of some machines in our plant. From previous readings, it is suggested that you buy glass board kits from Accuspec, Topline, etc. Is that the easiest/cheapest way to go abo
