Electronics Forum | Mon Dec 07 16:40:37 EST 2009 | jkomets
I have a number of computer parts with faulty VRAM. I have two high-end video cards and a laptop motherboard, each worth over US$100, and some other parts worth less. They all exhibit symptoms typical of faulty VRAM; that is, they display multicolore
Electronics Forum | Wed Dec 09 09:47:32 EST 2009 | dyoungquist
I am curious as to why you need to mix.... We use a 500g cartridge with air gun. Our process is remove the cartridge from the fridge, allow it to warm up to room temperature before inserting into air gun, then apply bead of paste to the stencil. N
Electronics Forum | Thu Dec 10 12:53:12 EST 2009 | deanm
Bryan, Dyoungquist is correct. You should not need to mix solder paste. Overmixing solder paste can adversely affect it. Follow these guidelines and you should be fine: 1. Keep unopened containers of paste in the refrigerator. 2. Take one container
Electronics Forum | Thu Dec 10 05:58:59 EST 2009 | gregoryyork
Best to use Tin treated with TinP Additive. This ensures the Tin is fluid enough to Dissolve any Leaded residues. Run the machine for one hour at 275C then take out wave former and as much of the workings of the pot as possible. Then start bailing ou
Electronics Forum | Thu Dec 10 16:57:32 EST 2009 | vetteboy86
I'm just getting into temperature profiling our PCB's. We recently bought a new reflow oven. The company purchased a mole before I was hired. This is what I will be using. What is the preferred way to attach the thermocouples to the PCB locations of
Electronics Forum | Wed Dec 23 09:11:56 EST 2009 | lynn_norman
In a former life, we used hi temp solder. I've heard of adhesive and taping methods, we just never used them. We too had a "golden" assembly that we would use for routine profiling. Our requirement was to attach a TC to the lowest thermal mass, hi
Electronics Forum | Tue Dec 15 12:23:47 EST 2009 | swag
I have moved golden boards from chains to mesh as I got tired of fishing t-couples under the chain rail. I saw a 3-5 deg. decrease on top-side parts peak temp. (all t-couples were on top side). I had to bump zones 6 and 7 a few degrees to make up f
Electronics Forum | Fri Dec 18 12:43:34 EST 2009 | gazupfer
jamm, As with the other answers you've received, I agree there will be a difference. The question is will the difference between the temperatures of the product profiled at the mesh belt put you out of spec when you run production on the rail? the ke
Electronics Forum | Tue Dec 15 10:28:06 EST 2009 | fönsi
Hello I have a trouble with converting CAD-Data in to Pick and Place Files. I have a export-file from Cades-G and I need a File in the ASCII-Format which includes REF, X, Y and DEG, regardless of order to import in my ESSEMTEC Placer. Some months ag
Electronics Forum | Mon Dec 21 12:20:52 EST 2009 | MLD
Here is my question to the Guru's on this site. Lead free boards to go though Wave / reflow - and then sent through a water wash 2 day's prior to Hand assembling a 50mil ribbon connector. This is a 4 layer board with 2x2116 pre-preg (.036 1/1 5x762
