Electronics Forum | Thu Aug 22 05:05:12 EDT 2019 | worzel76
Hi I have a TVM920 pick and place machine but need something with a conveyor and more feeders I thinking of a used Yamaha YV100 XG or a Chinese SMT880 I want to make the correct choice and would really appreciate some advice
Electronics Forum | Thu Dec 05 11:36:30 EST 2002 | William Guatemala
Have you check the flux gravity lately? If not, Check the flux gravity every 6 hours to make sure proper parameters are meet. Here is a list of things that may cause your solder ball problems; Excecive heat, defective fixtures, preheating temperature
Electronics Forum | Thu Jun 19 09:33:09 EDT 2008 | stevenvl
Hi, I'm having issues with boards sticking/jamming along the line, as well as what seems to be excessive wear along the guide rails. The boards are an Alumina Ceramic material and the rails differ by machine, but include anodized aluminum, steel, de
Electronics Forum | Mon Apr 18 10:07:19 EDT 2011 | wrongway
Hello Jebs we started out that way but the more handaling of the pcb the more problems you will have if you can do it in line and have the pcb's stop at some of the conveyors you can do some inspection. yes all of our machine's are in line now we lo
Electronics Forum | Mon Apr 17 19:30:27 EDT 2000 | Boca
All of the above is good stuff. To add, I have seen this several times if the assembly is wavesoldered. Heat from the wave can partially reflow the top side SM solder joints and weaken them. To test, check joint strength before wave and then after
Electronics Forum | Thu Jan 24 09:53:56 EST 2002 | davef
You didn�t tell us about your solder, wave temperature profile, or the distribution of the problem. So, let�s assume the solder is near eutectic and the problem is wide spread. Wolfgang makes good points. So, let's talk a different tact. When we
Electronics Forum | Thu Jan 24 13:23:53 EST 2002 | Shawn
Thank you all very much for the responses. The solder is eutectic and the problem, as far as I can tell, has been around before I was here, 2+ years. The flow machine is a treiber with 2 bottom preheaters and 1 top. The solder pot temp is 500F +/-4F
Electronics Forum | Thu Dec 05 11:04:27 EST 2002 | slthomas
They're IR, bottom side only. Frankly wave solder is not my forte (there are those that would claim nothing is), but I've personally been tasked with developing a process to do reliable, high volume bottom side SMT, so I'm drawing a lot from the tec
Electronics Forum | Wed Nov 29 01:09:17 EST 2006 | Guess
I would suggest checking the feeder, MVF and MSR are both turret type and dont have the capability auto pik adjust in y. Y offset pick up would lead to : 1. Over turn component. 2. Missing component. Turret sequence is pick, recognize an
Electronics Forum | Fri Jul 13 11:33:54 EDT 2007 | realchunks
Just starting and already responsible for product quality and machine adjustment? Wow, you poor bastard. Ok, I will assume this problem happens on the bottom side of the board with a thru-hole IC. The short occurs on the side that doesn't have the
