Electronics Forum | Thu Feb 07 13:53:06 EST 2013 | dyoungquist
IR reflow worked well for leaded solders but is not recommended for lead free reflow soldering. Your darker components (ICs) absorb more heat from IR than lighter colored ones (Rs & Cs). When getting all solder joints up to the proper lead free pea
Electronics Forum | Mon Feb 11 11:28:43 EST 2013 | marcelorotofrance
yes, Bob, I agree about that. But I can't afford them by now. But the problem is that I had to reject almost the 50% of the feeders that came with the machine, because are useless even for 1206. I also work with a very old but faithfull Juki, with it
Electronics Forum | Mon Feb 11 15:43:18 EST 2013 | fredcalkins
I am not a quad feeder mechanic but I woud assume your worst ones are dirty with sticking parts or have worn out parts. Perhaps Scott Heck could help you with parts, scotheck@aol.com I know he rebuilds older factory feeders to work with 0402s and 02
Electronics Forum | Wed Feb 13 09:26:45 EST 2013 | slthomas
All good comments from everyone and all things we're either working on now or know we should but can't because our resources are already stretched too thin. Frankly I hate CAPAs because I hate getting them. Maybe I'd learn to love them if I initiate
Electronics Forum | Thu Feb 14 13:10:58 EST 2013 | markhoch
I had this problem once a loooooooong time ago with a 248 that was at my previous place of employment. If I remember correctly, my issue was caused by a set screw on the drive gear that had worked itself loose. My issue was stright forward and quickl
Electronics Forum | Thu Feb 14 17:00:42 EST 2013 | richardc
I am trying to use Mydata TM8C feeders that work fine on a TP93 running 1.6.18 TPsys but are not recognized by a TP94 machine running 1.4.7 TPsys. I get a green flashing light instead of a solid green. I can initialize the hardware but can not proc
Electronics Forum | Thu Feb 21 11:22:06 EST 2013 | emeto
It is a very interesting thought. However, teach all positions on the PCB might be challenging if you don't have them in the file. I think it is a smart think for OEMs as they would have all the resources to control their files. For CEM I don't see i
Electronics Forum | Mon Mar 18 09:19:48 EDT 2013 | marcelorotofrance
I can move the axes XYUV just in short steps through the "MANUAL NC" function. The axis encoders seem to work; the readings of position follow the axis movements. However the actual position of the head has nothing to do with the readings at the disp
Electronics Forum | Fri Mar 15 16:26:04 EDT 2013 | hegemon
Mask the pad on the PWB using liquid solder mask. Cure the mask and away you go. Use a mini stencil and a squeegee to maintain planarity and minimize issues at paste print. We have used this technique before. In other cases we have masked the bott
Electronics Forum | Fri Mar 15 18:44:34 EDT 2013 | anvil1021
We will try both the solder mask and the .001" Kapton and see where we end up with each. This is a fine pitch dual row QFN and we cannot afford too much paste on the .004" stencil we are using. We have experienced shorting in the past with .005" sten
