Electronics Forum | Fri Jan 19 07:21:07 EST 2007 | meritajs
Thank all for your advices. But we had sistem error,which was connected,how we could undestand with failure main PC controller boards.We had swoped winchester memory block and Zevatech operation was restored Best regards Peter
Electronics Forum | Sun Jan 28 13:26:27 EST 2007 | Sweet Old Bob
Okay you CM haters I don't see anything about the design of the board, other than OSP which is strike one. What is the board size? What is the board thickness? Where is the BGA located on the board? What is your ball to pad ratio? What is your aspect
Electronics Forum | Mon Jan 15 19:21:08 EST 2007 | SWAG
Not sure if this has any bearing on the problem but did you check to see that T2 and T3 are jumped on the speed control board per the first note in the prodedure?
Electronics Forum | Fri Jan 19 14:29:19 EST 2007 | I.P. Freely
What is the part designator? A lot has to do with that. Also, is this a double sided reflow board. Perhaps you need to change your process to accept two heat cycles simultaneously. Solder thieves should work. Check the archives.
Electronics Forum | Thu Jan 18 12:30:19 EST 2007 | slthomas
Change pastes, although insufficient heating may leave excessive residues. Is this on one board or all products? No Clean or water soluble? Do you profile accurately or "guesstimate" your settings?
Electronics Forum | Tue Jan 23 13:10:10 EST 2007 | jax
This is something a DFM should catch. Best Option: Add Break-Away rails to the board. Worst Option: Buy a true on-contact printer... (normally referred to as the Y-Snugger option)
Electronics Forum | Tue Jan 23 13:41:44 EST 2007 | chrisgriffin
What exactly do you mean by "side clamps"? If you mean the thin strips of metal that the board is pushed up against, they are adjustable. Maybe a little more squeege force or down stop also.
Electronics Forum | Wed Jan 24 13:25:26 EST 2007 | pr
Grid-lok only supports the board, so why would what I suggested defeat the purpose of the grid-lok? You still falling down when you mark your golf ball, Tyrone?????
Electronics Forum | Wed Jan 24 16:40:07 EST 2007 | chrisgriffin
Not as wack as Nancy Pelosi being Speaker of House. But back to the topic, Grid Lock kicks ass. You can even adjust the amount of force of the pushers that come up to the board. Your pads must be right on the edge. Might want to look into break-a
Electronics Forum | Thu Jan 25 21:49:12 EST 2007 | realchunks
Wagoner, Try switching to a transitional paste designed for no lead parts on a leaded board. Running your current paste at higher temps will dry out your flux too soon, which may be your problem.
