Electronics Forum | Fri Jul 24 17:28:57 EDT 2020 | rsatmech
Hello all, We have a new model running upon analysis I found one challenge while cleaning the send side boards. We have a thru hole in top where it's bottom ends are covered inside the shield. Operator find difficult to clean as it has high chanc
Electronics Forum | Wed Jul 29 21:16:17 EDT 2020 | SMTA-64387706
Hi, I have a PCB that works fine when tested before conformal coating with HumiSeal 1B73. It seems like the CC is causing electrical issues. We brush it on, so it is a bit thick. After curing we are getting QFNs that do not seem to connect well and a
Electronics Forum | Fri Aug 07 13:30:22 EDT 2020 | emeto
ASM machines have great algorithms for BGA and I am positive it will detect missing ball. Still, on your pictures it seems like you are severely starving solder in the locations shown on X-ray. Part seem too small to bend that much in reflow to form
Electronics Forum | Tue Aug 04 14:06:59 EDT 2020 | stephendo
Are you sure it is not a 240V transformer with a center tap? That is how residences are wired. If you use the center tap you get 120V. The other tap to center tap is 120V that is 180 degrees out of phase. So if you use the two outside taps you get 24
Electronics Forum | Tue Aug 04 14:28:39 EDT 2020 | ttheis
Yes, I am certain it is 240 corner grounded delta. It confuses many electricians and it took me some time to understand. It is fed from a 480:240 delta 200A transformer. As I mentioned, they have a lot of Bridgeport 3ph machines and cnc machines conn
Electronics Forum | Wed Aug 05 18:06:34 EDT 2020 | smittym
So I have a old TpSys system running on a TP9-2U and I can't get the initializing hardware when I boot the unit. Once the program loads the computer freezes if I select any of the drop menu items. I can however get it to initialize if I go into Servi
Electronics Forum | Wed Aug 12 17:57:32 EDT 2020 | glasscake
Due Diligence Post: Figured out my issue with the laser itself, it was set up in RS422 mode and it should have been setup in 0-10v analog out. As far as actually using the tools i have not got that far yet but I will DD again when I get that far. I
Electronics Forum | Wed Aug 12 22:18:42 EDT 2020 | stephendo
Almost all the people here buy boards with the metal already plated on. We are mostly assembly people. The ones you really want to talk to are PCB fab people. And if you want to look into plating PCBs, I would suggest you look up Black Pad. It hasn'
Electronics Forum | Wed Aug 12 18:26:16 EDT 2020 | SMTA-64387117
Looking for engineers to test new desiccant technology and compare with Silica Beads. Samples provided. Additionally, engineer can work with and collaborate with "engineers only" group lead by US Military engineer for packaging. The goal is to d
Electronics Forum | Thu Aug 13 15:46:57 EDT 2020 | ironsmt
I'm having a problem getting sufficient solder reflow on a SMD part. The board design (which can't be changed) is covered in ground planes that cause a lot of uneven heat distribution. I believe heat is wicking away from the culprit part, causing t
