Path: ...!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: John Robertson Newsgroups: sci.electronics.repair Subject: Re: Switch Contacts Date: Sun, 15 Sep 2024 22:46:18 -0700 Organization: A noiseless patient Spider Lines: 25 Message-ID: References: Reply-To: spam@flippers.com MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Date: Mon, 16 Sep 2024 07:46:19 +0200 (CEST) Injection-Info: dont-email.me; posting-host="e6282a36be30108b002cc5c4cb464f82"; logging-data="2814409"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX19+/vVHm2q5Y0+Qj1HASHdzCniSGosytQQ=" User-Agent: Mozilla Thunderbird Cancel-Lock: sha1:MWaeE9e28YkyO9cA4YsVF5m1zbU= Content-Language: en-US, en-CA In-Reply-To: Bytes: 2198 On 2024-09-15 9:44 a.m., Nick Hayward 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! Have you verified that the meter leads are making good electrical contact to the switch blades? Oxidation can fool any of us! Touch one probe to the switch blade, and touch the other probe further down the blade - repeat on the other side, only then check for electrical contact closure once you are certain you have good probe connections. John :-#)# -- (Please post followups or tech inquiries to the USENET newsgroup) John's Jukes Ltd. #7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3 (604)872-5757 (Pinballs, Jukes, Video Games) www.flippers.com "Old pinballers never die, they just flip out."