Electronics Forum | Mon Oct 16 17:46:49 EDT 2006 | Dan
Recently I was given a bad Bios Link from Toshiba which fried my Bios and now my laptop boots to a black screen. I recently unsoldered and removed the existing Bios chip and have ordered anotherfor replacement. Unfortunately while removing, i damag
Electronics Forum | Tue Oct 17 17:25:36 EDT 2006 | stepheniii
It all has to do with charges being drained. IIRC the pink stuff won't build up a charge but doesn't drain it well. As for the need for mats, how are charges being drained now? I don't think you can have no charges building up. With ESD all you can
Electronics Forum | Thu Oct 19 20:03:04 EDT 2006 | darby
I agree with Stephen there! Or maybe we just didn't care enough about looking into it in the COLD profile days! Back to df: I don't think any manufacturer is going to give you a tolerance level, they'll stick with what they've told you -225. If it's
Electronics Forum | Wed Nov 08 12:21:23 EST 2006 | SWAG
A little more detail on our application: It is a large fixture (approx. 15" x 18") that spans the chain fingers in the reflow. It has several cut-outs and reductions in thickness to allow for better heat distribution. It worked well/stayed flat fo
Electronics Forum | Mon Nov 27 22:19:13 EST 2006 | ppcbs
800 degrees? Ouch! I find that every company that I do training for has at least one person that likes to go through one tip a day. The solution is tip tinning. Tell your operators to wipe the tip on a damp sponge often. Do not buy your sponges
Electronics Forum | Sat Nov 11 21:00:10 EST 2006 | Kris
BTU - "WTF" We don't like them at all. We have no problem to set the profiles, it is a matter of fact that they are just perfect for that. The boards are just perfectly soldered. But - the their support sucks Big time! Or the lack of support! We are
Electronics Forum | Sat Nov 04 21:30:15 EST 2006 | Ola
Well, I can't tell you what the "glass wicking failure on PCB" are but for a standard FR4-pcb the Tg temp. or the so called glass temp. is 176 celcius degr. This means that the pcb is in between a firm and a buoyant condition. This is really a bit of
Electronics Forum | Tue Nov 07 08:01:10 EST 2006 | davef
We/ve never heard of "glass wicking failure" in regards to board fab. Boat fab, yes. Look here: http://www.boatdesign.net/forums/showthread.php?t=13321 Barrel cracking appears after thermal stress during soldering, because epoxy expands in the "z"
Electronics Forum | Fri Nov 10 17:00:05 EST 2006 | darby
Yep. If speed is not an issue a Heller 1500 will pretty well do you fine unless you are trying to process a brick. A Heller 1700 will not give you any more heated length, so don't get sucked in to that one. However, they are a little more fun to pl
Electronics Forum | Wed Dec 06 16:14:25 EST 2006 | realchunks
Assuming you meant 38 percent humidity - I would have to say your environment is only part of the problem. When you experience this problem, is because the paste has set idle for a period of time? If you knead the paste does the fine pitch print OK