Questions tagged [cleaning]

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4answers
1k views

How to best clean this sealed mechanical rotary encoder / volume knob?

How can I best clean, replace or lubricate this fairly well sealed digital rotary mechanical encoder? The equipment operates, but the encoder is super finicky, often encoding in the wrong direction ...
0
votes
1answer
78 views

Clean vs no-clean flux for high voltage circuit

I have a board that has fairly high working voltages up to 100V with small clearances down to 12 mil between the high voltage and ground or low voltage nets. This is unavoidable because the whole ...
0
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0answers
68 views

How to clean circuit damaged by bleach?

I was trying to remove stains on a fiber optic party tie using bleach, however it seems a small quantity has leaked inside the controller overnight, causing some corrosion and preventing it from ...
0
votes
1answer
65 views

Does alcohol set off Liquid Contact Indicators?

I have a MacBook Pro PCB that has lots of yucky, gooey and sticky grime from a spill that thankfully didn't damage the board. I would like to clean thr PCB thoroughly, but I fear turning the liquid ...
0
votes
1answer
57 views

solder wire makes solid & glassy residue

I know using flux makes some residue which makes unwanted contacts between components pins. I dont have any washing liquid or spray to remove it so i simply decided to not use them. But my solder ...
6
votes
1answer
149 views

Can you tell me more about “re-enterable” potting compound?

I heard the term "re-enterable potting compound", which is a gel-like (possibly hard?) material that can be used to fill electronics enclosures for water intrusion protection and other things. What ...
0
votes
1answer
884 views

Ultrasonic cleaner control with Arduino

I'm trying to build a small sized ultrasonic cleaner. I bought a couple ultrasonic transducers (ranging between 40kHz - 102kHZ and 15 - 35 watt) which I want to play around with. There are already ...
-1
votes
2answers
1k views

Can I clean PCB using Petrol?

I was advised to clean PCB using petrol if alcohol is not available. I have tested doing it. Petrol and isopropile alcohol both works good on PCBs. I have also tried with asitone but it makes white ...
0
votes
1answer
5k views

Can acetone be used on electronics? [duplicate]

So my local dollar store doesn't sell rubbing alcohol, but does sell acetone. Can I use acetone instead of rubbing alcohol on electronics? I know acetone does attack some plastics but rubbing ...
0
votes
0answers
37 views

Solution for refurbishing sealed switches

I don't know if this is the right stack to ask this in, but I could not find a match, but I feel this question may have enough common interest to find a solution anyway. I am attempting to refurbish ...
0
votes
1answer
426 views

How to clean solder paste needles?

I am looking for a good method to clean used solder paste needles immediately after usage. I know they are for one time use, but at this moment I have to clean the needles. Currently, I clean them in ...
0
votes
0answers
131 views

Removing Lead from surfaces/floors

I have been doing some soldering in my garage, and because of my solder sucker, there is a some lead dust/powder on the table and floor. What would be the best methods for cleaning up as much of this ...
0
votes
1answer
89 views

Using “Video 90” spray to clean up a cell phone motherboard

Can I use Video 90 Spray with electronic motherboards, like smartphones? My cell phone was dropped in water while the battery was out, now I have dried it out using rice and instant oat! Before, ...
0
votes
1answer
139 views

How to clean this volume control? Which deoxit cleaner should i use?

Of all the contact cleaners deoxit offers, i'm not sure if i should use D series or faderlube. (Note: This is NOT a volume control of the newer ones that just sends a signal to the software, this one ...
1
vote
3answers
488 views

Cleaning a computer CPU - Do gauze pads with polyester in them cause ESD?

Do gauze pads, the type used for scrapes or burns, cause ESD if they have a mix of polyester in them? What if the polyester mix gauze pads have rubbing alcohol on them too? They don't have any lint ...
3
votes
2answers
625 views

How to clean dirty test pins in bulk?

Is it possible to clean lots of dirty test pins reliably? We have about 6000 of these test pins and most of them are very dirty. If I cleaned them, what kind of lubricant should I use to relube them? ...
4
votes
2answers
4k views

What metal is recommended for soldering iron tip wire mesh cleaner - brass, copper or steel?

There are many low-cost options out there for metal wire mesh tip cleaners. Three types of wire metal are dominant - steel, brass and copper. I was wondering if there is a metal that is superior to ...
3
votes
2answers
156 views

Vacuum-drying of cleaned PCB's?

De-ionized water is generally regarded as an effective cleaning agent for PCB's, as shown here and here. However, removing that water means compressed air, oven, and/or lengthy drying-time. Even if ...
1
vote
1answer
3k views

Why is distilled water used for cleaning circuit boards

I've been reading up on distilled and deionized water and I've come across conflicting information. If compared to regular tap water there are little to no minerals, is this the reason they're used ...
4
votes
1answer
2k views

How to Clean Solder Stencils?

I have had great success in the past using the reflow soldering method, using a syringe and needle to apply the paste to the board. However, I found myself repeatedly making the same boards so I ...
-1
votes
1answer
520 views

How to clean resistors [duplicate]

So I accidentally spilled milk on my resistor and I have no idea how to clean it. I wrapped the resistors with a towel but they still smell really bad :/. Is it okay to put them in water and dry them ...
1
vote
1answer
650 views

Can I wash my PCBs denatured alcohol

I have denatured alcohol which, according to wikipedia, is composed of roughly: 85% ethanol 10% water 3% methanol 1% aceton 1% pyridine My solution has a blue color. Can I use this as a replacement ...
2
votes
2answers
1k views

Why would cleaning my OSH Park PCB result in residue left over?

I recently bought a PCB from someone that was created by OSH Park. Other than the pictures online, this is the first board I've seen from them. Even though I didn'...
5
votes
3answers
6k views

Components to avoid using on an ultrasonic cleaner

What components populated on a PCB are not safe to clean in an ultrasonic cleaner? It is not limited, but I specifically wonder below components if they are safe to use or some requires special ...
30
votes
3answers
39k views

What does “no clean” solder actually mean?

I bought some solder that says it doesn't require cleaning. The description specifically says "Eliminates the need and expense of cleaning". But there's still a lot of some substance left on my board ...
18
votes
14answers
58k views

How to clean a potentiometer?

I have a couple of potentiometers that haven't been touched in quite some time. In fact, probably not in 15 years. So now they produce noisy output, presumably from oxides or some other crud that has ...