Josh Malone did a talk about this in 2019 at TA (Tandy Assembly) Here is the video link: https://www.youtube.com/watch?v=OgjSdzbcYoM&t=2s Link to the slides: https://www.vintageboot.net/wp-content/uploads/2019/09/tasm-m100.pdf He has a slide on Repairing Battery Damage. " Repairing Battery Damage • Battery leakage is actually alkali – Clean with a mild acid • Lemon juice, or white vinegar - diluted 50% • Duracell recommends “one tablespoon of boric acid in one gallon of water” • Replace corroded components • Repair corroded traces with jumper wires – 30-gauge “Kynar” wire • Final wash with distilled water or 99% isopropanol"
I hope this helps Tim On Mon, Oct 18, 2021 at 5:24 PM <[email protected]> wrote: > Send M100 mailing list submissions to > [email protected] > > To subscribe or unsubscribe via the World Wide Web, visit > http://lists.bitchin100.com/listinfo.cgi/m100-bitchin100.com > or, via email, send a message with subject or body 'help' to > [email protected] > > You can reach the person managing the list at > [email protected] > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of M100 digest..." > Today's Topics: > > 1. corroded battery contacts (Francois Gurin) > 2. Re: corroded battery contacts (Jeffrey Birt) > > > > ---------- Forwarded message ---------- > From: Francois Gurin <[email protected]> > To: [email protected] > Cc: > Bcc: > Date: Mon, 18 Oct 2021 11:45:07 -0400 > Subject: [M100] corroded battery contacts > > Hi All, > > This isn't specifically an m100 question, but is one that relates and I'm > sure people here will have experience with this. I have an Amstrad NC-200 > with severely corroded battery terminals. When it's just battery leakage, > I have always had good luck with contact cleaner (I use WD-40 brand contact > cleaner and a toothbrush for cleaning pretty much everything, it's a lot > easier for me to work with that the various deoxits and other brands) and > on extreme cases help from a knife or some steel wool. > > Contact cleaner isn't doing much, and it's very resistant to scraping. I > have a feeling this is straight up rust which I (knock on wood) don't have > much experience with on electronics or a combination of both > battery leakage and rust. > > Short of fully replacing the terminals, any ideas on how to clean up these > terminals? > > --fg > > > > > > ---------- Forwarded message ---------- > From: Jeffrey Birt <[email protected]> > To: <[email protected]> > Cc: > Bcc: > Date: Mon, 18 Oct 2021 11:21:02 -0500 > Subject: Re: [M100] corroded battery contacts > > Soak in a mild acid such as vinegar or citric acid. Afterword rinse the > coat with WD-40. > > It is possible to buy some nice new battery contacts now too. I did a > video recently about this after a friend gave me a tip about the new > contacts being available from Aliexpress. > > https://youtu.be/HwqvUbz0vPY > > Jeff Birt > > > > *From:* M100 <[email protected]> *On Behalf Of *Francois > Gurin > *Sent:* Monday, October 18, 2021 10:45 AM > *To:* [email protected] > *Subject:* [M100] corroded battery contacts > > > > > > Hi All, > > > > This isn't specifically an m100 question, but is one that relates and I'm > sure people here will have experience with this. I have an Amstrad NC-200 > with severely corroded battery terminals. When it's just battery leakage, > I have always had good luck with contact cleaner (I use WD-40 brand contact > cleaner and a toothbrush for cleaning pretty much everything, it's a lot > easier for me to work with that the various deoxits and other brands) and > on extreme cases help from a knife or some steel wool. > > > > Contact cleaner isn't doing much, and it's very resistant to scraping. I > have a feeling this is straight up rust which I (knock on wood) don't have > much experience with on electronics or a combination of both > battery leakage and rust. > > > > Short of fully replacing the terminals, any ideas on how to clean up these > terminals? > > > > --fg > > > > > _______________________________________________ > M100 mailing list > [email protected] > http://lists.bitchin100.com/listinfo.cgi/m100-bitchin100.com >
