Electronics Forum | Thu Jul 07 11:52:25 EDT 2016 | proceng1
We just pulled a Speedline Accuflex printer out of storage. After programming a board and stencil, and calibrating the fiducials and everything, we do a test alignment and bring the board to print height. It is off. I've done it now with two diffe
Electronics Forum | Mon Apr 09 12:52:00 EDT 2018 | slthomas
We are about to do a second iteration of something we struggled mightily with last time and I'm hoping to at least make a step in the right direction. There are 12 of these parts on the board and virtually all of them required removal and replacemen
Electronics Forum | Tue Nov 05 10:55:41 EST 2019 | engmagana
Hi Ameen, Did you fix it? I had the exact same problem with the same type of coil , check the images , LF solder SAC305, we have adjusted the solder apertures to the minimum solder required to have a strong joint enough to break the pad from the bo
Electronics Forum | Thu Nov 03 01:39:53 EDT 2022 | spacecase
Thank you for the response, left the machine turned off for a good period of time and somehow the issue solved itself. I was able to calibrate the next day and homing hasn't been an issue. However now I'm having another problem where it gets 4 comple
Electronics Forum | Sun May 23 07:13:56 EDT 1999 | Scott Cook
| Has anyone had any experience or data using vibration during the reflow process. | We introduced a vibration device attached to the fixed rail on a Vitronics reflow oven. The reason was to prevent skewing on large PLCC devices. The process worked v
Electronics Forum | Fri Aug 04 12:57:34 EDT 2000 | Steve Thomas
James, we used to use 3 clamshell type printers (one of which did have a two camera vision system, and did all our fine pitch), but had limited success with 20 mil pitch. 25 mil pitch was no problem. I suspect that you'll find people that have had
Electronics Forum | Fri Jun 02 17:19:56 EDT 2000 | Big K
I am currently experiencing several problems with QFP's on one of our IP3's. The first problem is with QFP240 devices. We are experiencing a high reject rate with these parts when using vision type 100. What appears to happen is that the vision syste
Electronics Forum | Wed Feb 07 11:19:23 EST 2001 | CAL
Precision parts and precision boards are nice for the initial evaluation but are costly for routine monthly accuracy tests. I know for a fact all the Siemens machines leaving Germany are evaluated with precision parts and board and placements are eva
Electronics Forum | Mon Jul 30 12:41:47 EDT 2001 | hinerman
1. Realizing not all PCBs will be warped, but for those that are, the tooling can be set when the board is in contact with the stencil, which will take out some warp. On an MPM, the vacuum box helps to hold the board flat If the warp is more sever
Electronics Forum | Wed Oct 27 07:38:08 EDT 1999 | Mario
Hi Jerry, I have a solution for you which I have done myself and shown to others which should cost you less than 100$ if you already have a microscope.This is still an operator job and an automated operation. You need two mirror squares (about 4inc
