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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: TheMagicM on March 17, 2017, 12:34:45 PM
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But its not on the battery area. If you're looking down at the mobo, its on the bottom right area, close to where the mouse/joystick would be plugged in. Is that normal? Just brush it off I'm assuming.
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I've been working on a couple A2000 motherboards, one with battery damage, so corrosion is very much on my mind lately. I would use a good PCB cleaner. The best is Tricoloroethane, which is probably not available anymore, but I'm sure there are modern equivalents. I use the solvent with a firm toothbrush and scrub as hard as I feel is safe to get all the gunk off.
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Ok. I'll look around for cleaner. Just found it odd to have corrosion nowhere near the battery.
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Ok. I'll look around for cleaner. Just found it odd to have corrosion nowhere near the battery.
If the case was stored on it's side, or upside down, it could have dripped.
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is there corrosion near any other openings. A smoker's pc would always corrode anywhere a board was near a case opening.
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But its not on the battery area. If you're looking down at the mobo, its on the bottom right area, close to where the mouse/joystick would be plugged in. Is that normal? Just brush it off I'm assuming.
Haven't seen that before, post a photo if you have one. Might also be liquid damage if something has somehow spilled into the port opening in the case.
As for cleaning the board, isopropyl alcohol is the standard across the electronics industry. Easy enough to get and safe to use.
I've had countless boards in for repair with all manners of crap spread over them, from WD40 and petroleum jelly to lemon juice, vinegar, baking soda, citric acid, you name it. Seems there's a theory where if it comes from your garage or kitchen cupboard, it somehow performs miracle Amiga repairs. There's that theory that household substance x neutralises corrosion, which is probably true if it was used in exactly the right proportion in exactly the area of corrosion. Else it just tends to make a bigger mess. Isopropyl works fine.
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I've had countless boards in for repair with all manners of crap spread over them, from WD40 and petroleum jelly to lemon juice, vinegar, baking soda, citric acid, you name it.
Hey now, don't knock the WD-40! :lol:
(https://permies.com/t/11104/a/2935/engineeringflowchart.jpg)
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Love the diagram, only too true at times.
Though now I'm going to get boards for repair that have been 'fixed' with duct tape as well... :whack:
Will at least make a change from the usual A4000 boards with SIMMs that have been super-glued in then liberally plastered with hot glue. And the A3000 boards that have been 'fixed' by removing the PLCCs using a crowbar so that all the sockets crack, then the broken sockets 'fixed' with a cable tie. I better quit ranting while I'm ahead.
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Haven't seen that before, post a photo if you have one.
Here ya go..
http://imgur.com/a/E0d0W
Also, if you look at the top of that floppy, I'm assuming this was all original. So maybe you were right, some sort of liquid spill.
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But its not on the battery area. If you're looking down at the mobo, its on the bottom right area, close to where the mouse/joystick would be plugged in. Is that normal? Just brush it off I'm assuming.
I had an A2000 that had battery leakage all the way to the other side of the board (under the power/hd lights), must have been 8-10 inches from the battery!!
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Also, if you look at the top of that floppy, I'm assuming this was all original. So maybe you were right, some sort of liquid spill.
Great photos, I see what you mean. Not sure if the spots on the floppy drive might be related, but that certainly looks like there's been some liquid on the board. No idea how it might have got there. Looks similar to, but not the same as typical battery corrosion.
Put plenty of isopropyl alcohol on the area and scrub with a short brush. An old toothbrush or a trimmed down 1-inch paintbrush works OK. Soak away the scrubbed IPA and corrosion using a paper towel, the rest will quickly evaporate.
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@Castellen:
Thanks for the help. Will do!