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Old 06-07-2018, 10:05 AM   #181
Dan81
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Default Re: Cleaning Motherboards - ATTN SMOKERS!!

Had a for parts machine that I thought bringing back to life. Had a ASRock P4VM890, Delta DPS-300PB-2A and a VIA USB2 card.

I hope NOBODY has to live the hell I had to go through cleaning the PSU. Sweet Jesus Christ, I don't think I had a PSU smell that bad of nicotine and have so much dust.

I cleaned out the dust now. It still smells a bit (generally when warm) but it's mostly gone.
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Old 06-07-2018, 03:07 PM   #182
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Default Re: Cleaning Motherboards - ATTN SMOKERS!!

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Had a for parts machine that I thought bringing back to life. Had a ASRock P4VM890, Delta DPS-300PB-2A and a VIA USB2 card.

I hope NOBODY has to live the hell I had to go through cleaning the PSU. Sweet Jesus Christ, I don't think I had a PSU smell that bad of nicotine and have so much dust.

I cleaned out the dust now. It still smells a bit (generally when warm) but it's mostly gone.
How do you clean a PSU?
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Old 06-07-2018, 10:26 PM   #183
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Default Re: Cleaning Motherboards - ATTN SMOKERS!!

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How do you clean a PSU?
Same way you do a motherboard. Complete disassembly, hot water & simple green, and an air compressor to blow the water out of everything. I've cleaned a lot of them that way.

Here's a good example of hotwashing some PSU's: https://www.badcaps.net/forum/showpo...1&postcount=16

I do this all the time with stinky PSU's from houses of smokers. Like anything else electronic, just make sure its dried out good before firing it up. With an air compressor, you can wash, air compressor dry, reassemble, and power them up right away...I do it all the time.
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Old 06-07-2018, 10:47 PM   #184
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Default Re: Cleaning Motherboards - ATTN SMOKERS!!

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Originally Posted by Topcat View Post
Same way you do a motherboard. Complete disassembly, hot water & simple green, and an air compressor to blow the water out of everything. I've cleaned a lot of them that way.

Here's a good example of hotwashing some PSU's: https://www.badcaps.net/forum/showpo...1&postcount=16

I do this all the time with stinky PSU's from houses of smokers. Like anything else electronic, just make sure its dried out good before firing it up. With an air compressor, you can wash, air compressor dry, reassemble, and power them up right away...I do it all the time.
I'm a noob. I thought you could get zapped pretty good taking about a psu?
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Old 06-07-2018, 10:55 PM   #185
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Default Re: Cleaning Motherboards - ATTN SMOKERS!!

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I'm a noob. I thought you could get zapped pretty good taking about a psu?
If you're a noob, you might not want to try it.....but if the PSU is thoroughly & completely dry, its safe.
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Old 06-07-2018, 11:15 PM   #186
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Default Re: Cleaning Motherboards - ATTN SMOKERS!!

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If you're a noob, you might not want to try it.....but if the PSU is thoroughly & completely dry, its safe.
So if I open it up there is no risk of shock?
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Old 06-07-2018, 11:21 PM   #187
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Default Re: Cleaning Motherboards - ATTN SMOKERS!!

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So if I open it up there is no risk of shock?
If you remove power, it should discharge everything.
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Old 06-07-2018, 11:23 PM   #188
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If you remove power, it should discharge everything.
Awesome! I have a few lying around that I can run tests and clean them. You rock!
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Old 06-08-2018, 08:14 AM   #189
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Default Re: Cleaning Motherboards - ATTN SMOKERS!!

To be on the safe side measure the big capacitors with a volt meter set to DC.
Sometimes they don't discharge, either because the discharge resistors are broken or none are installed...
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Old 06-08-2018, 08:46 AM   #190
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Default Re: Cleaning Motherboards - ATTN SMOKERS!!

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To be on the safe side measure the big capacitors with a volt meter set to DC.
Sometimes they don't discharge, either because the discharge resistors are broken or none are installed...
I did say *should* discharge... On old television sets I'd service back in the day, if servicing power supplies, I'd just take a screwdriver and short the leads on those caps, just to make sure they were drained. They'd occasionally create a nice spark!
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Old 06-09-2018, 11:55 PM   #191
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Default Re: Cleaning Motherboards - ATTN SMOKERS!!

It works perfect. I love this forum. Hat tip to you Top Cat!
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Old 11-22-2019, 12:41 PM   #192
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Default Re: Cleaning Motherboards - ATTN SMOKERS!!

Lol thats what the inside of my laptop looked like last time i cleaned it
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Old 12-17-2019, 05:54 AM   #193
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Default Re: Cleaning Motherboards - ATTN SMOKERS!!

Hey I've just joined the forum after reading a few posts. I'm going to clean a motherboard with hot water and simple green. I don't have an air compressor. Can I dry it with a hairdryer? Or is it better if I leave it to air dry?


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Old 12-17-2019, 06:58 AM   #194
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Default Re: Cleaning Motherboards - ATTN SMOKERS!!

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Hey I've just joined the forum after reading a few posts. I'm going to clean a motherboard with hot water and simple green. I don't have an air compressor. Can I dry it with a hairdryer? Or is it better if I leave it to air dry?


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Old 12-18-2019, 06:19 PM   #195
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Default Re: Cleaning Motherboards - ATTN SMOKERS!!

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Can I dry it with a hairdryer? Or is it better if I leave it to air dry?
Doesn't matter, both will work.

However, be advised that if you do use a hair dryer, the board could still have moisture/water trapped under the large BGA chips and some connectors, even if it looks dry on the outside. For this reason, I prefer to let my boards air dry. This takes more time, however. If you are looking for a speedier process, first let the board drain for about 30 minutes while placed vertically. After this, hit it with the hair drier until most of the moisture from the board is gone and the board feels warm. Finally, let the board sit for a day or two in a dry, airy place. I, for example, have have forced air heating (and cooling) at my place, so after doing the above, I then place the board sitting vertically above an air vent. Usually within a day, my stuff dries. But I typically let it sit for 2-3 at least.
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Old 12-18-2019, 06:31 PM   #196
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Default Re: Cleaning Motherboards - ATTN SMOKERS!!

I dry them with the air compressor. Wash, dry, and powered back up...all within 10 minutes. Never had an issue!
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Old 12-18-2019, 09:42 PM   #197
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Default Re: Cleaning Motherboards - ATTN SMOKERS!!

how about baking the board for an hour at 100C? this is used to remove moisture to prevent popcorning during reflows. can the same logic and technique be used to just make sure the bga chips are dry underneath before applying power?
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