Electronics Forum | Wed Oct 27 09:39:54 EDT 2004 | loz
Hi all, been recently wave soldering some pcbs with no problems and have now noticed what looks like blue residues on some solder joints. We have been running this product for around six months and this is the first time we have seen this. It is rand
Electronics Forum | Fri Sep 09 15:03:46 EDT 2005 | Amol
Hi, I am running a circuit board that needs a part to be put on it after cleaning and before conformal coating. the only problem is that after cleaning and hand assembly of the part, there is a thin whitish residue in the ckt board that one can see w
Electronics Forum | Wed Aug 09 14:36:30 EDT 2006 | cyber_wolf
Swag, I think I have mentioned this on the forums before....The only way to truly get those chains clean is to use a foaming oven cleaner. It requires several applications to get them completely clean. Also, you need to remove the tracks and clean t
Electronics Forum | Tue Dec 26 10:54:37 EST 2006 | yusufgomec
We use hot air leveling (HAL) process in pcb production. HAL process is 3 steps. �n 1. step flux. 2. step is HAL. And 3. step is rinsing. As you know there is mustn't any flux after rinsing operation. Our flux chemical is water soluable. But there ar
Electronics Forum | Wed Feb 07 16:16:10 EST 2007 | mr
I have seen this before. Check: --Vibration of belt --Interference (part getting "brushed off" while reflowing bottom-side components --Some glues' cross-linking mechanism is impaired by the flux during migration in reflow, redering the glue useless
Electronics Forum | Fri Jan 26 13:26:30 EST 2007 | rw
We are developing a new product that requires conformal coating on the motor controller. We selected a silicone based conformal coat due to its ease of use. There has been disagreement among engineers as to its impact on the motor. We have contact
Electronics Forum | Tue May 08 13:02:39 EDT 2007 | jmelson
I need a service manual for a Philips CSM84 type PA1306/20. I have the PA1306/40 manual, if that is any use to anyone. The 1306/20 was the last model with analog servo amps and DC brush motors, the 1306/40 was the first with AC brushless motors and d
Electronics Forum | Fri Jun 08 18:30:53 EDT 2007 | jmelson
I have the entire computer box assembly from a 1306/40 series machine. This was one of the first with the AC servo motors and digital drives. It was taken from a working CSM66 at the same time as I bought a CSM84. It was included to be used as spa
Electronics Forum | Thu Jul 05 22:56:53 EDT 2007 | gyverlo
Hello Sirs: Recently we are having an issue with environmental stress (high humidity or moisture), so we decide to apply conformal coating on our motherboard to protect via holes. According to IPC-A-610D, spec of thickness for type AR is 0.03~0.13 m
Electronics Forum | Thu Jul 12 16:57:46 EDT 2007 | jmelson
Canyou see this contamination? Is it solder beads, flux or something else? If flux, then more cleaning should help, either more time, more cycles through the cleaner, etc. If it is solder beads that are not melted to the rest of the solder, then s
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