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Author Topic: A501 dammaged from battery leakage  (Read 2682 times)

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Offline Xamiche

Re: A501 dammaged from battery leakage
« on: April 03, 2008, 01:58:02 PM »
{Bad advice removed to prevent others from using it. Self Edit :-D}

Click the button indicated by the red arrow and follow the prompts. :-)



Oh wait...from your computer? Not sure. I upload mine to Photo Bucket first.
A500, A600, A1200, A2000, A4000D, A4000T, CD32
 

Offline Xamiche

Re: A501 dammaged from battery leakage
« Reply #1 on: April 03, 2008, 02:39:37 PM »
Quote

orange wrote:
well, there have been long discussions here whether battery leakage is acid or something else. to be safe, I'd use only Isopropyl  alcohol.

BTW, I have one dead A501 because of leakage.. I've tried everything but the leakage is too big. The traces show OK on multimeter.. maybe some chip died  :-?

Okay, I just did a little digging and found that the NiCad type batteries have potassium hydroxide (KOH) as an electrolyte. Which is a base. So don't go using that baking soda after all. It may make it worse. Apparently KOH reacts with CO2 to form H2O + K2CO3 which is neutral. However there can still be enough KOH to corrode the board. The Isopropyl alcohol in that case would probably be the best solution, no pun intended. :-D

Quote
Would acetone do? or is that to heavy....

Personally, I'd stick with the isopropyl alcohol, it's slightly acidic I believe and may help to neutralise any KOH leaked by a NiCad. Acetone may be too heavy.
A500, A600, A1200, A2000, A4000D, A4000T, CD32
 

Offline Xamiche

Re: A501 dammaged from battery leakage
« Reply #2 on: April 05, 2008, 07:46:33 AM »
Quote

da9000 wrote:
I recommend reading the below thread in its entirety (if you want to get "the most bang for your boing" :-D ):

http://www.amiga.org/forums/showthread.php?t=33392

BTW: do NOT put acetone on there.

If the battery is a NiCad, as Amiga onboard batteries were, the leaked substance is a base (KOH), so do not put Baking Soda [size=10](Not to be confused with Baking Power)[/size] on there, as it's also a base. The combined chemicals may become more corrosive.

The Isopropyl Alcohol is mildly acidic so may act to neutralise any of the KOH leaked from the battery. And also clean the area.
A500, A600, A1200, A2000, A4000D, A4000T, CD32
 

Offline Xamiche

Re: A501 dammaged from battery leakage
« Reply #3 on: April 05, 2008, 09:03:12 AM »
Quote

da9000 wrote:
Huh?

You already said that above :-)  And, BTW, I do agree with your analysis and recommendation (I've used it many times and also lots of water). I was just pointing the OP to another relevant thread (with more links on relevant chemistry etc)

Cheers

Sorry, I just felt like re-iterating, since the thread you posted had some saying to use Baking Soda. Just to be on the safe side. :-)
I'd hate to see the guy damage the module further.
A500, A600, A1200, A2000, A4000D, A4000T, CD32