Electronics Forum | Thu Oct 14 08:05:17 EDT 1999 | JohnW
Dream, Sound's to me like your PCB supplier has process problems, probably outgassing or such from trapped moisture / contaminant's. I thoink it's time you called in your vendor for a chat. JohnW
Electronics Forum | Fri May 24 11:24:11 EDT 2002 | yngwie
Pete C, Cyber wolf and JohnW...cheers man...excellent input. But I 'm eager to try the method mentioned by Cyber wolf..sounds very convincing. Let see what is the results later. thanx again and have a nice weekend. /yngwie
Electronics Forum | Fri Mar 11 12:23:28 EST 2011 | upguy
Ed: Our Mydata TP9-UFPs are down when we are using them to write programs. That Excel macro from Mydata would be a godsend. We would be very interested in getting and using the macro. Please contact me. Thanks. John
Electronics Forum | Fri May 06 06:27:24 EDT 2011 | james1903
John, If you do end up in need of a new 16cls controller, we currently have these both new old stock and salvaged/tested. Just mail me if the requirement comes up. BR James
Electronics Forum | Thu May 13 19:41:17 EDT 2004 | johnww
Hi Everyone, I want to use LEDs in an enclosed box for edge lighting etched glass. There are 15 LEDs in a box and they are set up in 5 series of 3 LEDs. The LEDs are 3.5V 20Ma 8000mcd. I've worked out that I need an 82 ohm resistor for each series
Electronics Forum | Mon Oct 11 13:08:29 EDT 1999 | Dave F
| Folk's, | | I'm just tying up some loose end's on my Master's Thesis on solderballing @ wave soldering and the effect the topography of the mask / PCB has on it. | I was wanting to do a straw poll on you guy's as to the type of resist's you are us
Electronics Forum | Thu Jul 15 14:40:43 EDT 1999 | JohnW
| | snip | | | Dave, believe it or not it's the only thing these loupot's do..crop n form ! scary but then they are built like the preverbial brick shit house..don't know if you guy's are familiar with the phrase...but you'll only ever need to buy
Electronics Forum | Wed Nov 08 03:48:10 EST 2000 | JohnW
If your feeling really flush with ash you could contact your wave machine vendor and buy some from them. But I have to admit I do prefer Dave's idea...much cheaper, you'll get it in some kinda timescale rather than the 4 week's your machine vendor wi
Electronics Forum | Thu Aug 10 03:17:29 EDT 2000 | JohnW
Simon, when it comes to soldering those lovly little PCb's why not read Soldering in Electronics by R.J. Klien Wassink (electrochemical publications). Dave F found this to be a real hit in Jimbo's! ( I on the other hand, never mastered some of the
Electronics Forum | Fri Jun 23 08:52:16 EDT 2000 | Dave F
John: Seek your answers in the archives. As I recall someone said: � Biggest cause of BGA shorting was out-gassing in-package moisture. � Removing shorts w/o removing the device: - Preheat the board - Lower the nozzle and heat the device - Lift the
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