Yahoo Groups archive
Thread
2008-01-05 by rbf45356
I'm repairing a Peavey DPM C8 MIDI Master Controller and need to replace the battery. I found that the battery is starting to corode itself and has leaked what appears to be acid on the circuit board. It doesn't appear to have damaged anything yet. What have you guys used to safely remove the acid/corrosion from the circuit board??? Thanks, Brian
2008-01-05 by Brian Davies
Hi Brian A strong solution of bicarbonate of soda is what I ve been using over the past 60 years, brush it on with something like a tooth brush. Then rinse
2008-01-05 by Roy J. Tellason
On Saturday 05 January 2008 02:47, Brian Davies wrote: > Hi Brian > > A strong solution of bicarbonate of soda is what I've been using over the > past 60 years, brush it on with something like a tooth brush. Then rinse > well in cold water straight from the tap. Place in a warm place over night > (airing cupboard is ideal). > > Regards > Brian G3OYU > www.g3oyu.co.uk Yeah, but that assumes that the stuff in question is actually an acid... If the battery in question is a nicad (and I didn't see any mention in the original post of what it was), then the electrolyte that leaks out is an alkali, not an acid. In that case vinegar or other mild acid is a better neutralizing agent. > _____ > > From: vintagesynthrepair@yahoogroups.com > [mailto:vintagesynthrepair@yahoogroups.com] On Behalf Of rbf45356 > Sent: Saturday, 05 January 2008 03:15 > To: vintagesynthrepair@yahoogroups.com > Subject: [vintagesynthrepair] Battery Acid Damage??? > > I'm repairing a Peavey DPM C8 MIDI Master Controller and need to > replace the battery. I found that the battery is starting to corode > itself and has leaked what appears to be acid on the circuit board. It > doesn't appear to have damaged anything yet. What have you guys used > to safely remove the acid/corrosion from the circuit board??? > Thanks, > Brian -- Member of the toughest, meanest, deadliest, most unrelenting -- and ablest -- form of life in this section of space, a critter that can be killed but can't be tamed. --Robert A. Heinlein, "The Puppet Masters" - Information is more dangerous than cannon to a society ruled by lies. --James M Dakin
2008-01-05 by Brian Davies
Personally I would never ever use an acid no matter how dilute for this purpose. If the leakage is known to be alkali I would suggest plain water, possibly
2008-01-05 by Brian Fuller
The battery is a NiMH Varta 3/V60R similar to a NiCAD.I'm not sure what this means as far as what it leaks.But regardless THANKS for the info!!!! Cheers, Brian _____
From: vintagesynthrepair@yahoogroups.com [mailto:vintagesynthrepair@yahoogroups.com] On Behalf Of Brian Davies Sent: Saturday, January 05, 2008 2:09 PM To: vintagesynthrepair@yahoogroups.com Subject: [SPAM] RE: [vintagesynthrepair] Battery Acid Damage??? Personally I would never ever use an acid no matter how dilute for this purpose. If the leakage is known to be alkali I would suggest plain water, possibly hot. Regards Brian G3OYU www.g3oyu.co. <http://www.g3oyu.co.uk> uk _____ From: vintagesynthrepair@yahoogroups.com [mailto:vintagesynthrepair@yahoogroups.com] On Behalf Of Roy J. Tellason Sent: Saturday, 05 January 2008 17:37 To: vintagesynthrepair@yahoogroups.com Subject: Re: [vintagesynthrepair] Battery Acid Damage??? On Saturday 05 January 2008 02:47, Brian Davies wrote: > Hi Brian > > A strong solution of bicarbonate of soda is what I've been using over the > past 60 years, brush it on with something like a tooth brush. Then rinse > well in cold water straight from the tap. Place in a warm place over night > (airing cupboard is ideal). > > Regards > Brian G3OYU > www.g3oyu.co.uk Yeah, but that assumes that the stuff in question is actually an acid... If the battery in question is a nicad (and I didn't see any mention in the original post of what it was), then the electrolyte that leaks out is an alkali, not an acid. In that case vinegar or other mild acid is a better neutralizing agent. > _____ > > From: vintagesynthrepair@ <mailto:vintagesynthrepair%40yahoogroups.com> yahoogroups.com > [mailto:vintagesynthrepair@ <mailto:vintagesynthrepair%40yahoogroups.com> yahoogroups.com] On Behalf Of rbf45356 > Sent: Saturday, 05 January 2008 03:15 > To: vintagesynthrepair@ <mailto:vintagesynthrepair%40yahoogroups.com> yahoogroups.com > Subject: [vintagesynthrepair] Battery Acid Damage??? > > I'm repairing a Peavey DPM C8 MIDI Master Controller and need to > replace the battery. I found that the battery is starting to corode > itself and has leaked what appears to be acid on the circuit board. It > doesn't appear to have damaged anything yet. What have you guys used > to safely remove the acid/corrosion from the circuit board??? > Thanks, > Brian -- Member of the toughest, meanest, deadliest, most unrelenting -- and ablest -- form of life in this section of space, a critter that can be killed but can't be tamed. --Robert A. Heinlein, "The Puppet Masters" - Information is more dangerous than cannon to a society ruled by lies. --James M Dakin
2008-01-05 by scott frye
On Saturday 05 January 2008 02:47, Brian Davies wrote:
> Hi Brian
>
> A strong solution of bicarbonate of soda is what I've been using over the
> past 60 years, brush it on with something like a tooth brush. Then rinse
> well in cold water straight from the tap. Place in a warm place over night
> (airing cupboard is ideal).
>
> Regards
> Brian G3OYU
> www.g3oyu.co.uk
Yeah, but that assumes that the stuff in question is actually an acid...
If the battery in question is a nicad (and I didn't see any mention in the
original post of what it was), then the electrolyte that leaks out is an
alkali, not an acid. In that case vinegar or other mild acid is a better
neutralizing agent.
> _____
>
> From: vintagesynthrepair@yahoogroups.com
> [mailto:vintagesynthrepair@yahoogroups.com] On Behalf Of rbf45356
> Sent: Saturday, 05 January 2008 03:15
> To: vintagesynthrepair@yahoogroups.com
> Subject: [vintagesynthrepair] Battery Acid Damage???
>
> I'm repairing a Peavey DPM C8 MIDI Master Controller and need to
> replace the battery. I found that the battery is starting to corode
> itself and has leaked what appears to be acid on the circuit board. It
> doesn't appear to have damaged anything yet. What have you guys used
> to safely remove the acid/corrosion from the circuit board???
> Thanks,
> Brian
--
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space, a critter that can
be killed but can't be tamed. --Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James
M Dakin
Never miss a thing. Make Yahoo your homepage.
2008-01-06 by Keyman
Hi, I also have a RED Peavey DPM C8 MIDI Master Controller, it's always powered on since the last five months,
( when it displyed ""low battery"") waiting for a replacement battery ( it was hard to find ).
New year, and finaly a new battery, can someone let me know the best steps to take for replacement?
Regards
José Silva
2008-01-09 by Brian Fuller
Brian, Just wanted to let you know I used the baking soda w/a little water and let it stand for a few minutes then cleaned it off with a toothbrush. Worked like a charm!!! I blew the board off with my air compressor and then cleaned the rest of the "crud" with a pencil eraser. Thanks to a friend in the U.K. from the U.S.A., Cheers, Brian _____
From: vintagesynthrepair@yahoogroups.com [mailto:vintagesynthrepair@yahoogroups.com] On Behalf Of Brian Davies Sent: Saturday, January 05, 2008 2:09 PM To: vintagesynthrepair@yahoogroups.com Subject: [SPAM] RE: [vintagesynthrepair] Battery Acid Damage??? Personally I would never ever use an acid no matter how dilute for this purpose. If the leakage is known to be alkali I would suggest plain water, possibly hot. Regards Brian G3OYU www.g3oyu.co. <http://www.g3oyu.co.uk> uk _____ From: vintagesynthrepair@yahoogroups.com [mailto:vintagesynthrepair@yahoogroups.com] On Behalf Of Roy J. Tellason Sent: Saturday, 05 January 2008 17:37 To: vintagesynthrepair@yahoogroups.com Subject: Re: [vintagesynthrepair] Battery Acid Damage??? On Saturday 05 January 2008 02:47, Brian Davies wrote: > Hi Brian > > A strong solution of bicarbonate of soda is what I've been using over the > past 60 years, brush it on with something like a tooth brush. Then rinse > well in cold water straight from the tap. Place in a warm place over night > (airing cupboard is ideal). > > Regards > Brian G3OYU > www.g3oyu.co.uk Yeah, but that assumes that the stuff in question is actually an acid... If the battery in question is a nicad (and I didn't see any mention in the original post of what it was), then the electrolyte that leaks out is an alkali, not an acid. In that case vinegar or other mild acid is a better neutralizing agent. > _____ > > From: vintagesynthrepair@ <mailto:vintagesynthrepair%40yahoogroups.com> yahoogroups.com > [mailto:vintagesynthrepair@ <mailto:vintagesynthrepair%40yahoogroups.com> yahoogroups.com] On Behalf Of rbf45356 > Sent: Saturday, 05 January 2008 03:15 > To: vintagesynthrepair@ <mailto:vintagesynthrepair%40yahoogroups.com> yahoogroups.com > Subject: [vintagesynthrepair] Battery Acid Damage??? > > I'm repairing a Peavey DPM C8 MIDI Master Controller and need to > replace the battery. I found that the battery is starting to corode > itself and has leaked what appears to be acid on the circuit board. It > doesn't appear to have damaged anything yet. What have you guys used > to safely remove the acid/corrosion from the circuit board??? > Thanks, > Brian -- Member of the toughest, meanest, deadliest, most unrelenting -- and ablest -- form of life in this section of space, a critter that can be killed but can't be tamed. --Robert A. Heinlein, "The Puppet Masters" - Information is more dangerous than cannon to a society ruled by lies. --James M Dakin
2008-01-09 by Brian Davies
Hi Brian You re very welcome. This is what comes of long experience, cleaning up after exploding electrolytics in valve equipment! 73 Brian G3OYU