Electronics Forum | Mon Sep 25 13:54:28 EDT 2017 | emeto
Check your exhaust points and cooling zones. Cooling zones should have filters that need to be cleaned and it is most probably where your problem comes from. In front(if you have two exhaust pipes) you might need a filter change as well.
Electronics Forum | Wed Oct 04 21:21:21 EDT 2017 | duchoang
For some reasons, we need to wash our BGA boards in ultrasonic washer in order to clean all flux residue under BGA. We use Ultrasonic cleaner with 40 KHz. Should we or shouldn't we do that. Pros and Cons ? Any idea appreciated.
Electronics Forum | Thu Nov 16 07:57:48 EST 2017 | andras
Hi, I must change our current terrible foam fluxer unit used in Seho wave to a spray type to let able to use water soluble flux. Does anybody have recommendation for solution that won't break the bank? BR:Andras
Electronics Forum | Thu Feb 08 08:47:57 EST 2018 | andras
Hi, We are currently using Alfa EF-2210, that is a good water based flux for spraying, but can't be used with foam fluxer (it is pain to use with foaming - builds extensive foam) BR:andras
Electronics Forum | Thu Feb 08 09:06:03 EST 2018 | andras
Bought spray fluxer unit extension to our machine ;) AFAIK water based fluxes are not available for foam, and we didn't wanted to move toward the alcohol based ones because of theirs multiple drawbacks
Electronics Forum | Wed Feb 14 15:37:48 EST 2018 | cbart
Do you mean in a reflow oven or wave solder? if so check your exhaust blower, make sure its still drawing. if not the flux/dust that builds up on the exhaust pipes may be falling into the machine.
Electronics Forum | Fri Aug 24 12:59:03 EDT 2018 | cupet
Dear davef, but this LED is skip component, that's a blank footprint and one of its pad is badly wetted...this is the reason for my thinking about contamination. Do you mean different solder paste with more aggressive flux?
Electronics Forum | Mon Oct 08 14:52:13 EDT 2018 | emeto
+paste was not stored properly Paste doesn't have enough flux and is more sticky than usual. Could be a lot code related or a purchase order related. I wold order a new jar and try immediately.
Electronics Forum | Fri Nov 16 07:55:17 EST 2018 | robl
Hi Prem, We used to place millions of Nickel battery tabs using Cobar paste. We found it particularly aggressive. Just contact your local Cobar distributor and ask them for samples of their most aggressive fluxed paste. Kind regards, Rob.
Electronics Forum | Fri Nov 16 09:04:40 EST 2018 | robl
and here.... https://smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=9389&#Message37375 Which was in the days of leaded, but the ROHS paste had the same flux formulation.
