HP 41C Battery Contacts (Cleaning?)
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09-23-2014, 03:47 PM
Post: #4
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RE: HP 41C Battery Contacts (Cleaning?)
(09-23-2014 02:45 PM)Eddie W. Shore Wrote:(09-23-2014 01:54 PM)ElectroDuende Wrote: The problem here is taht the copper layer on the flex circuit is quite thin, so there are a lot of chances that it has been completely destroyed by the leak. You can start with a wet cotton to remove any leak rest and then gently polish with metal cleaner. If you find that the copper layer is removed, The Calculator Store has a repair kit that will let your battery contacts as new. As I suppose that the leak came from alkaline batteries, a weak acid will help to remove the remainings; you can use white vinegar, for example. But be sure to remove any remaining, as it will (with time enough) attack the copper. Wha I usually do when I encounter a device with leaked alkalines is: - Clean the remainings with vinegar or citric acid - Rinse with distilled water - Rinse with alcohol (isopropyl better, but I've also used ethyl) - Air dry overnigth To do so I'd recommend you to dissasemble the calculator, so you can rinse the mid module without risking the rest. |
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Messages In This Thread |
HP 41C Battery Contacts (Cleaning?) - Eddie W. Shore - 09-23-2014, 01:10 PM
RE: HP 41C Battery Contacts (Cleaning?) - ElectroDuende - 09-23-2014, 01:54 PM
RE: HP 41C Battery Contacts (Cleaning?) - Eddie W. Shore - 09-23-2014, 02:45 PM
RE: HP 41C Battery Contacts (Cleaning?) - ElectroDuende - 09-23-2014 03:47 PM
RE: HP 41C Battery Contacts (Cleaning?) - ColinJDenman - 09-23-2014, 09:08 PM
RE: HP 41C Battery Contacts (Cleaning?) - Eddie W. Shore - 09-24-2014, 12:33 PM
RE: HP 41C Battery Contacts (Cleaning?) - jebem - 09-24-2014, 03:54 PM
RE: HP 41C Battery Contacts (Cleaning?) - ColinJDenman - 09-24-2014, 06:51 PM
RE: HP 41C Battery Contacts (Cleaning?) - Eddie W. Shore - 09-27-2014, 06:51 PM
RE: HP 41C Battery Contacts (Cleaning?) - jebem - 09-28-2014, 12:51 AM
RE: HP 41C Battery Contacts (Cleaning?) - ColinJDenman - 09-27-2014, 07:03 PM
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