Electronics Forum | Mon Jul 13 06:30:59 EDT 2009 | hcarrasco
1.- Check your vacuum a.- Check filters b.- Check air flow (the vacuum is generated by a Ventury using air flow, not air pressure) c.- Vaccum vias (Possible linth inside the vacuum lines) 2.- Check the nozzle condition (Probably broken o
Electronics Forum | Fri Aug 14 18:48:36 EDT 2009 | secura1
It's some time difficult to control process when > using a heat gun. What is the intent of using the > heat gun after test? we agree... the heat gun method was an experiment. We are planning to us a hot air re-work station. The intent is to re-
Electronics Forum | Sat Aug 22 05:19:42 EDT 2009 | ghepo
Dear Eric, in my opinion this is a very complex problem, that require to know many details for answer. For example : 1) what about the PCB finishing ? Have you verify the quality of they ? 2) what about the solder paste (the exactly composition)? 3)
Electronics Forum | Sun Aug 23 07:03:09 EDT 2009 | ghepo
OK Eric, is difficult answer at distance without examine the PCB..., anyway in my opinion the problem is the PCB quality. There are two possibility : the crack is between solder and nickel or is between nickel and pad copper. In both situation the
Electronics Forum | Mon Aug 31 07:56:39 EDT 2009 | d0min0
Hello, since some days we are facing strange problem with SMT component reflow paste on one side of the component is reflowed correctly while the other side is 10%-70% non-reflowed (same component on 3 positions per module, alwyas the same land pad)
Electronics Forum | Wed Sep 30 13:10:49 EDT 2009 | spitkis2
Hi guys, Can someone please clarify whether adjustment of Z axis travel is a critical parameter during placement of QFN devices. If so, to within what tolerance? In other words, should a pick and place machine position a QFN down on the board so t
Electronics Forum | Wed Feb 17 12:16:17 EST 2010 | dcell_1t
Hi there: During the past weeks (let's say since beginning of the year) we've been experiencing some issues with shifted components. We verify for position before Reflow oven and the components are Ok, but they observe shifted after reflow. it occurs
Electronics Forum | Wed Mar 31 06:08:45 EDT 2010 | miroyu
Hi everyone ! I started to program quad 4C for the first time and have some problems. First, board detection LED and proximity Led (on the front panel) are not lightning whatever I do! Second problem is I teach machine board size, nozzle locations
Electronics Forum | Mon Aug 30 06:47:18 EDT 2010 | arjan
We having issues installing the Linear Tech LTM8023. We have different soldering results in our PBfree testruns. The voiding and solderball rate is not stable (random positions and sizes). The pcb's (gold finish)are prebaked, the LGA's are stored in
Electronics Forum | Mon Sep 20 18:27:13 EDT 2010 | ratsalad
dman, This happened to me once on a GSX, but the head was not all the way up. I ended up shutting the machine down, inserting a bypass key so it thought the head was lowered then turning it back on. Then I told it I wanted to raise the head, hit
