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Old 25 April 2003, 19:58   #1
thinlega
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A4000 Battery

Is it ok to yank this little bugger out....as it is making a mess of the motherboard. What should I do to clean up the poo it has left???
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Old 25 April 2003, 21:04   #2
Syko
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YANK IT OUT NOW!

If the nicad is leaking, you can lose tracks off the motherboard... use IsoPropylAlcohol (or IPA for short) to clean any crp off - use a cotton bud and wipe once each end then chuck, for best results.

It is possible to replace it with a remote mounted PC battery, or hack a button cell clip onto the board - but this needs a diode to remove the charging voltage. Get it right first time! Of course you could just get a straight replacement and solder it in.
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Old 25 April 2003, 21:28   #3
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I agree with Syko, remove it now as I waited too long and I'm pretty sure that some of my A4000's traces are broken
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Old 26 April 2003, 03:08   #4
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Yes, remove it immediately !
I have made bad experience when I got an A-500+ from a fleamarket.
The acid from it's battery had already killed one of the smaller chips and also destroyed some traces. I had to desolder the chip and replace the tracs with wires by the help of the schematics. Fortunately I got it right at the second attempt and now it works again
But that won't be easy to replace on a A-4000 board with all that small SMD parts... !

So: Desolder it now, or cut it off at least !
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Old 29 April 2003, 21:44   #5
thinlega
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tanks guys....I have ripped it out ok...!!

What would you use to clean the gooo off the motherboard???
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Old 29 April 2003, 22:11   #6
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Quote:
Originally posted by thinlega
tanks guys....I have ripped it out ok...!!

What would you use to clean the gooo off the motherboard???
Denatured alcohol of at least 95% or better. There is no Glycerin or other things in this kind of Alcohol

I use this with cotton swabs/buds to clean off any excess residue then evaporation takes care of the rest. The best option is some luquid called Freon TF but it's now a controlled substance here in the US so you can't find it very easily
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Old 30 April 2003, 00:44   #7
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alcohol is ok, but follow it up by washing with a solution of 5% baking soda, then clean up with water.
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Old 30 April 2003, 01:15   #8
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Quote:
Originally posted by Shadowfire
alcohol is ok, but follow it up by washing with a solution of 5% baking soda, then clean up with water.
You're probably thinking of standard rubbing alcohol which has other things in it and is usually only 70% alcohol
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Old 03 May 2003, 11:24   #9
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What he really means is IsoPropyle Alcohol or IPA for short (yes I know I can't spell) this is used throughout the electronics industry for cleaning curcuit boards and will cause no damage to componets and leave no residue.

Frankly the baking soda and water solution () is a makeshift fix and I wouldn't recommend it unless you don't have any IPA.
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Old 03 May 2003, 19:15   #10
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Quote:
Originally posted by Syko

Frankly the baking soda and water solution () is a makeshift fix and I wouldn't recommend it unless you don't have any IPA.
Yes well I find it does work well on car/truck engine batteries pretty good however
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Old 04 May 2003, 15:05   #11
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Yep it'll neutralise the sulphuric acid from them. While the leakage from NiCads is also acidic, so it will work with that, the residue left behind can be a problem - IPA dilutes and removes all the acid, and leaves no residue
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