Electronics Forum | Wed Sep 11 16:57:04 EDT 2002 | bigwop
I've seen this problem caused by the cool down. > On a 7 zone oven I made a profile to peak at zone > 5 to give some semblance of control to the cool > down. The component can develope a big delta T, > because of the difference of materials Che
Electronics Forum | Fri May 15 15:09:03 EDT 2009 | pcbrookie
We recently added a 7-zone Heller, and have had a 5-zone Heller for quite some time. When the tech installed our new oven, we were told the new oven does NOT have the lifetime warranty on heaters and blowers. However, when we order parts for the ol
Electronics Forum | Tue Dec 18 08:08:09 EST 2007 | itwasbill
Hi all, How can I convince my equipment purchasing supervisors that to properly solder BGA's a 7 zone oven would be far superior than a four zone? We currently own a 4 zone oven and I'm fearful that the BGA will not get adequate heat for solder
Electronics Forum | Thu Nov 10 11:48:03 EST 2016 | awhite
I recently had a similar problem on our 2000Hie, although ours was a 7-Hardware, Vision X. Turns out there was a short/break in the 3-wire harness that controls the Vision X Stepper. The difficulty came from the fact that this particular harness is
Electronics Forum | Thu Aug 20 09:32:28 EDT 1998 | JUSTIN MEDERNACH
| Steve: | Take a look at the attached url. As with all testing systems, tooling / fixturing is costly. But, not as bad as a bunch of "Bed of Nails" test fixtures. | Glad you had one of those great weekends, had to spend mine fishing,, again ,, Ca
Electronics Forum | Wed Oct 09 15:02:25 EDT 2002 | hartyl
hi, in our school we started a new project, decoding the 8 data-adresses of the LPT to a 7-segment-display. they wanted to make it display 0 - 9 and a dot if its bigger (one nibble). i thought this is nonsense, i'd decode it to a hex-number. ok, now
Electronics Forum | Fri Jan 03 11:42:38 EST 2003 | soupatech
Hi, I am loading a new board with mostly 0603 packages. The pads are .5 mm apart and I am having a big problem with parts shifting towards eachother instead of centering on the pads. I believe this is caused by too much solder. I am using a 7mil sten
Electronics Forum | Mon Jun 16 14:39:49 EDT 2003 | stepheno
The second one is typical. The important temperature is the temperature of the joint, not the setting of the oven. The oven setting are only important because they determine the temperature of the joint. If you set the oven to 150, that will be th
Electronics Forum | Tue Jun 24 09:42:52 EDT 2003 | stepheno
The temprature for the first zone should be less as the PCB entering the oven from the ambient shop floor temprature would suffer a thermal shock from a higher temp. Experience must be gained from profiling a board with thermocouples, otherwise you
Electronics Forum | Tue Jun 24 14:13:51 EDT 2003 | James
So which one is it? I am getting confused a bit because there are so many people doing it different ways. I know with higher temperatures at the begginning you have a chance of shocking the parts but if you dont have the higher temperatures at the
