Sticking 7188 signal

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Sticking 7188 signal - Advice needed

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joyofmarklin		#1 Posted : 11 March 2016 19:37:16(UTC) Retweet
Joined: 25/06/2012(UTC) Posts: 117 Location: phoenix		Hi, Just getting to grips with automated signals on my M track. Note that the lever sticks midway,so doesn't show the green light, just the red with my automated train control I'm using. If I move it manually over then the green light comes on, but not the red! Before I open the metal cover, advice re fix would be appreciated ? Many thanks Chris


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Markus Schild		#2 Posted : 11 March 2016 19:46:35(UTC) Retweet
Joined: 14/01/2006(UTC) Posts: 1,802 Location: Wurttemberg		Hi Chris, Just to check that we are talking about the same signal: The 7188 has a plastic-cover. That can be removed easily. The contacts on the reverse side of the circuit (yellow) must be cleaned, and if needed, adjusted. Regards Markus
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3 users liked this useful post by Markus Schild		Br502362, xxup, joyofmarklin
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joyofmarklin		#3 Posted : 11 March 2016 22:37:38(UTC) Retweet
Joined: 25/06/2012(UTC) Posts: 117 Location: phoenix		Markus, Many thanks for this. As a newbie what do I use to clean the contacts and how do I adjust them? Will be my first attempt! Thxs Chris


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SteamNut		#4 Posted : 11 March 2016 23:53:28(UTC) Retweet
Joined: 11/05/2013(UTC) Posts: 488		You can get a can of electrical contract cleaner at Ace Hardware or at a electrical supply store. Make sure it is non-flammable, I learned the hard and expensive way I use a toothpick to make adjustments but only after cleaning to make sure everything is moving freely as the cleaner seems to act as a lubricant.

1 user liked this useful post by SteamNut		joyofmarklin
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joyofmarklin		#5 Posted : 12 March 2016 03:41:14(UTC) Retweet
Joined: 25/06/2012(UTC) Posts: 117 Location: phoenix		Many thanks for your advice Chris


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