Electronics Forum | Tue Apr 13 08:21:05 EDT 2010 | esca
Hi manchella, After ATC test, two different failure modes can be present: solder FATIGUE (into bulk) or BRITTLE INTERMETALLIC fracture. So, first you have to verify this. Moreover, which brand of SMT paste have you used ? The crack into solder joint
Electronics Forum | Wed Apr 21 14:38:30 EDT 2010 | remullis
Newer Universal Conveyors use 4 wire smema and FUJI should accomodate this protocol in its config screens. Old Universal Conveyors and some machines used SMPI (forget how many wires), You can purchase the 4 wire smema cable from UIC and conversio
Electronics Forum | Fri Apr 16 11:36:33 EDT 2010 | fönsi
Thank you for the links. I didn't know that there are companys that build test systems for ultrasonic inspection. My idea was to use a ultrasonic detector similar to crack inspection, for example to detect if the cooling pad is melted, or a solder jo
Electronics Forum | Sat Apr 17 10:44:21 EDT 2010 | kcorrin
Sounds like you and your board suppliers have done alot of work with this issue trying to solve the problem. When I got into this situation previously, I relied on an outside lab to help me. We didn't have SEM or any testing capability at my shop eit
Electronics Forum | Mon Apr 19 11:36:10 EDT 2010 | baildl632
We installed a fixed distance optical sensor above the conveyor rail and "wired it" throught he machines terminal bus to cut the pump on only when a board was present at the pot. We also installed a timer in line so the pump would only stay on long e
Electronics Forum | Mon Apr 26 09:54:59 EDT 2010 | baildl632
What type of wave machine? Does your machine have a pump speed dial? Does your machine have the ability to raise and lower the pot? Raise pot to as close as possible to the pallets/boards and make sure they can pass over the nozzle without hanging o
Electronics Forum | Mon Apr 19 01:36:55 EDT 2010 | jola
Been a while since I used those machines but I found a list on how it was on ours anyway: MV2-F,C: F8-F1-F7-SHIFT-M-V MPA-V: F8-F1-F7-SHIFT-M-P-SHIFT-A-SHIFT-V MPA-G1: F8-F4-F7-SHIFT-M-F7-P-F7-SHIFT-A-F7 Always start from the main "run" screen. Go
Electronics Forum | Fri Apr 16 14:01:48 EDT 2010 | richardli
It could be the flux condensed in the oven. We plan to clean the vent and filter next week. Then we see if help. I just want to see if anybody has same problem in experience. Soldermask supplier told us the same white soldermask always change to a l
Electronics Forum | Sat Apr 17 18:37:11 EDT 2010 | jlawson
I personally would be wary of heller1707EXL and as I have many customers that find them not too repeatable due to cross profile variance... MarkIII not sure about. Always check perspective oven for this if you can...simple trick is to run blank PC
Electronics Forum | Mon Apr 26 03:04:15 EDT 2010 | grahamcooper22
I always fix thermocouples to pcb pads across its width. Then rotate it 180 degrees to check readings. If I am happy that the oven is giving results within a few degrees C then I'll crack on and set up a soldering profile. I am not sure what the oven
.gif)
