Electronics Forum | Tue Mar 25 08:29:33 EDT 2014 | sara_pcb
Please refer the attached jpegs, The problem is noticed after reflow soldering followed by conventional through hole soldering. Flux used one is MIL Std. Brush cleaning in IPA is followed after each soldering step. regards, R.Saravanan
Electronics Forum | Thu Sep 11 17:18:13 EDT 2014 | tech1
You may want to check the brushes in that motor, could very well be the "dust" that you have seen.
Electronics Forum | Thu Sep 11 17:23:05 EDT 2014 | chemers
The brushes are terribly worn, but we put them back in until we got new ones. We have them and will be replacing tomorrow. Thanks.
Electronics Forum | Wed Jan 25 07:24:31 EST 2017 | emeto
Hi, I used black marker before and it will works for a while, but it is not a permanent solution. Ask stencil house what kind of material and process they use to apply the black material. I think this operation might be done manually after the stenc
Electronics Forum | Thu Dec 14 16:47:53 EST 2017 | jeffr
You should replace the Brushes first. If it continues.. you must check the wire continuity back to the controler and possibly replace the Motor
Electronics Forum | Tue Oct 01 08:35:03 EDT 2019 | robl
For brush and dip coating we are using professional fume cabinets - https://monmouthscientific.co.uk/products/fume-cupboards/ 1.8m sized.
Electronics Forum | Mon Nov 01 09:56:57 EDT 2021 | richardcargill
Update - Solved On talking with BTU they mentioned that if the conveyor is always running full speed then cleaning out the motor brush area with compressed air will cure it. I'm guessing that the carbon dust had encroached onto the encoder. A good b
Electronics Forum | Mon May 16 21:16:50 EDT 2022 | SMTA-64387687
Can you brush some flux on the connector pins and run them through a heat cycle, hot enough to activate the flux, but not enough for solder to melt or component damage? That should remove most of the oxidation. Then, you can run it through your regul
Electronics Forum | Thu Nov 17 15:59:39 EST 2022 | bandjwet
Has anyone brush plated beryllium copper for electronics? Did you use a nickle layer first? Thanks!
Electronics Forum | Thu Mar 02 20:39:42 EST 2023 | markhoch
If you're using a good quality nozzle, you can clean the oxidation off with a wire brush and an emery cloth. Just make sure you re-tin it very well before you use it.