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PC AT 5170 - smells bad when I run it...

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  • VERAULT
    replied
    All valid concerns. I am not saying by any means "its ok to do so" But I have washed transformers and gave them ample drying time or placed them in front of my wood stove to dry. But to be honest most stuff I wash doesnt contain transformers.. But I have washed a bunch and they came out ok.

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  • alank2
    replied
    I do wash a lot of circuit boards that I make to get the flux off, so I've got experience with it, but that is with the components I'm familiar with. Some parts put up with water cleaning better than others. That transformer was what made me apprehensive too, I wouldn't worry about the pcb or many of the components on it, but some might be more sensitive than others and may not dry with my compressor blast...

    Leave a comment:


  • Chuck(G)
    replied
    What Chuckster said. About the only time I've washed a board in water is when it was encrusted with a half-inch of mouse poop. There it was a "what have I got to lose?" situation.

    I brush, vacuum, air-brush boards and may touch them up with isopropanol, but I never wash them. The potential for trapped moisture within a component is too great for my taste. If I had a bucket of Freon TF, I would have no reservation about dunking the thing.

    Leave a comment:


  • Chuckster_in_Jax
    replied
    Originally posted by VERAULT View Post
    Dont be afraid to wash it. IT will be fine. I wouldnt wash it in its case though. IT will rust. ITs really not a big deal. I realize you have hesitations but take it from folks who wash PCB's regularly.
    I have reserves about washing any board with a transformer on it.

    Leave a comment:


  • VERAULT
    replied
    Dont be afraid to wash it. IT will be fine. I wouldnt wash it in its case though. IT will rust. ITs really not a big deal. I realize you have hesitations but take it from folks who wash PCB's regularly.

    Leave a comment:


  • alank2
    replied
    I don't want to take the ps apart further, but here is a side picture of the bottom board:

    ps2.jpg

    Here is a picture of the main unit without the ps:

    5170.jpg

    I don't mind washing pcbs in water and compressor drying them normally, but I'm a little chicken about how water might affect some of the components on there. I'm just going to compressed air it to try to clean out what I can.

    Leave a comment:


  • VERAULT
    replied
    I dont wash fans.. Or coils like on a crt yolk or direct drive floppy mechanism. And obviously no batteries.

    Leave a comment:


  • T-R-A
    replied
    Originally posted by SunSpotter View Post
    Also, I'm a bit worried that washing it might do more harm than good? .
    Washing boards is a common practice in the manufacturing and repair industry. You just have to know what can't be washed. Obviously anything that retains water (unsealed relays, coils, etc) should be removed before washing. Almost any mild detergent will work (cheap dish soap is ideal), just make sure you scrub gently and remove all traces of water after rinsing (an air gun is recommended, as long as it doesn't generate too much static). We wash boards all the time where I work, and have a specialized cleaner, but it seldom gets used if there's any Dawn Professional anywhere close by.

    Leave a comment:


  • SunSpotter
    replied
    I've thought about washing my own 5170 board, but I don't really know the do's and don'ts. For instance, besides obviously the expansion cards, what needs to be removed from the board? I don't have a good soldering kit right now, so I'd be afraid to remove and replace caps until I get around to buying a good kit. Also, I'm a bit worried that washing it might do more harm than good? Mine was inside a hotel somewhere that a lot of smoking happened, which I know from the history and because the board has this weird grainy black layer of grime covering it. When I first tried removing it to read the label, it even scratched the PCB slightly.

    Leave a comment:


  • VERAULT
    replied
    If its that bad id remove the fan and run the psu boards through the dishwasherr. I love washing boards.

    Leave a comment:


  • maxtherabbit
    replied
    nothing looks obviously damaged there - can we have a look at that little PCB that is mounted upside-down under the main one?

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  • alank2
    replied
    Ok, you talked me into it. After finding a T10 security torx bit:

    ps.jpg

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  • maxtherabbit
    replied
    I'd really look inside that power supply before you do that...

    Leave a comment:


  • alank2
    replied
    I'm going to run it all weekend and see if it smells better. Got the Norton Commander running on it with a screen saver that changes the display constantly.

    Leave a comment:


  • neosunrise
    replied
    Originally posted by alank2 View Post
    I moved the PC to my garage and started it up and also started up the monitor in my office, but neither one seems to be smelling so bad now so who knows. Going to warm them both up for an hour. I turned down the brightness on the monitor since it isn't plugged in and had the white screen - surely it will be okay with no signal for an hour turned down, right?
    I donít see any issue here.

    Leave a comment:

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