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How do you clean your PCBs with residue?

post #1 of 11
Thread Starter 
How do you guys/girls clean your PCBs from residue, either from leaked coolant or caked on dust? Just seeing how people clean their computers.

I recently just bought a system from someone who was a heavy smoker. I was able to wipe off brown tar from the case, but PCBs are another story. Napkins and q-tips shred away with each stroke. I've been switching to 91% isopropyl alcohol and microfiber towel, but it easily gets caught by the solder points.mad.gif
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post #2 of 11

wash it water if its a motherboard keep a cpu in the socket while washing it and then let it sit and dry for a week or so in a dry place. blow a fan on it to help dry it.

I use high pressure hot water. But not too high pressure.


Edited by ozlay - 2/6/16 at 1:56am
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post #3 of 11
I have seen people that have used a dish washer to clean it.
Just have to make sure it dries fully.

My preferred method is to use rubbing alcohol with a little model paint brush.
Works good and is a little safer then water because it doesn't take as long to dry.
post #4 of 11
Thread Starter 
Quote:
Originally Posted by ozlay View Post

wash it water if its a motherboard keep a cpu in the socket while washing it and then let it sit and dry for a week or so in a dry place. blow a fan on it to help dry it.
I use high pressure hot water. But not too high pressure.

When you said high pressure, first thing that popped up in my head was a pressure washer for cars. When I got soda on my first mobo, I used an olive oil sprayer. I put 91% isopropyl and sprayed it multiple times, then finished off with a good spray of distilled water. Feel like I need to do that again :|
Quote:
Originally Posted by thrasherht View Post

I have seen people that have used a dish washer to clean it.
Just have to make sure it dries fully.

My preferred method is to use rubbing alcohol with a little model paint brush.
Works good and is a little safer then water because it doesn't take as long to dry.

I've heard of the dish washer method, but I never thought they were srs
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post #5 of 11
Used a tub of Cyberclean (Was $3 on sale figured I would give it a shot)
And it worked great, and left my board smelling like lemons.

Used the same tub(reusable) on another board a few days later and the first press it got stuck to EVERYTHING!
I had to spend many hours with a brush/toothpick and alcohol trying to remove the cyberclean lol


TLDR...

Don't use cyberclean lol
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post #6 of 11
I had to refurbish an older Sony Grand Vega rear projection television that I received from a very heavy smokers environment. I bought a case (6 cans) of CRC electrical contact cleaner to rinse off the sludge and odor from the various circuit boards. This cleaner uses a straw not unlike WD-40 so you can get in to some very tight spots and the pressure from the can is, at least in my case, enough to blast away the grime. The other advantage is the high evaporation rate, so reassembly can begin within hours.
Make sure to use this product outdoors and wear gloves, safety glasses, long sleeves, etc. READ the label and use common sense.smile.gif

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post #7 of 11
People act like cleaning a board lightly will break it, they arent as fragile as people make them out to be. Grab a soft bristle toothbrush and some 91% alchy and scrub it being kinda careful you will be fine. If you need to you can also rinse it with distilled just allow ample dry time.
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post #8 of 11
Thread Starter 
That is exactly what I did ^.^

20160209_035512.jpg 5598k .jpg file
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post #9 of 11
That is exactly what I did with my galaxy nexus after I dropped it in salt water.
It died, and after scrubbing it with 91%, it came back to life.
post #10 of 11
Rubbing alcohol and a toothbrush works well. Then I use q-tips to clean up.
 
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