Path: ...!weretis.net!feeder8.news.weretis.net!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail
From: legg <legg@nospam.magma.ca>
Newsgroups: sci.electronics.repair
Subject: Re: Switch Contacts
Date: Mon, 16 Sep 2024 10:24:59 -0400
Organization: A noiseless patient Spider
Lines: 30
Message-ID: <gifgejpvsg9eplfvlt6cn8glh7ddp1rak1@4ax.com>
References: <vc72tv$28u2v$1@dont-email.me> <1qzy463.1lil1q51591sn4N%liz@poppyrecords.invalid.invalid> <vc7rdo$2eh7f$1@dont-email.me>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Injection-Date: Mon, 16 Sep 2024 16:22:56 +0200 (CEST)
Injection-Info: dont-email.me; posting-host="c885d23af01ff31b24f4a88748d70a0c";
	logging-data="3046313"; mail-complaints-to="abuse@eternal-september.org";	posting-account="U2FsdGVkX1+BPnwO46zVtMGXWV2K7BVZ"
Cancel-Lock: sha1:LezwOwOgNTIHN2ZEVYb6oz9ZYEo=
X-Newsreader: Forte Agent 4.2/32.1118
Bytes: 2250

On Sun, 15 Sep 2024 23:42:48 -0000 (UTC), Cursitor Doom
<cd999666@notformail.com> wrote:

>On Sun, 15 Sep 2024 21:44:07 +0100, Liz Tuddenham wrote:
>
>> Nick Hayward <nhayward8990@protonmail.com> wrote:
>> 
>>> Hi all,
>>> 
>>> I have a switch which isn't making electrical contact. It consists of
>>> two leaf springs. Dead simple. They're springy enough to push against
>>> each other alright. And I've cleaned them with ethanol (didn't work)
>>> isopropyl alcohol (didn't work) and Servisol switch cleaning lubricant
>>> (didn't work either). I am at a complete loss here. Has anyone come
>>> across something like this? I can confidently say I never have!
>> 
>> I have had this happen when Hypoy gear oil has got on the contacts, but
>> as other have said, the fault may be elsewhere.  Were you making your
>> measurements directly on the springs or on something attached to them?
>
>No, I got the probes directly on the leaves themselves.

Soak some unbleached kraft paper in alcohol or kerosene, and 
force between the leaves' contacting surfaces. 
Move vigorously in a circular patternm, then remove and retest.

Nick Hayward = Cursitor Doom  ?
Wouldn't have bothered, if I'd known.

RL