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MAC 3 LED Trim Indicator...

 
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Matt Dralle
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Joined: 08 Nov 2005
Posts: 26320
Location: Livermore CA USA

PostPosted: Sat Feb 16, 2019 4:33 pm    Post subject: MAC 3 LED Trim Indicator... Reply with quote

Hello,

A fellow homebuilder friend of mine has a old-style three-LED (Red|Green|Red) MAC Trim Position Indicator. The Green LED was burned out, and the wires were cut off too short.

I told him I would try to replace the LED and lead wires. I got it apart without completely destroying it. But the internal wiring and polarity of the LEDs isn't that clear to me, nor is the actuation of it through a servo electronically. I'm not sure how to activate three LEDs with only three wires? (Or did there used to be four wires?)

Does anyone have a PDF schematic of the 3-LED MAC Trim Indicator that you could email to me?

Or better yet, does anyone have a spare or unused one of these they would like to sell me?

Thank you,

Matt Dralle




Matt G Dralle | Matronics | 581 Jeannie Way | Livermore | CA | 94550
925-606-1001 V | 925-606-6281 F | dralle(at)matronics.com Email
http://www.matronics.com/ WWW | Featuring Products For Aircraft


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PostPosted: Sun Feb 17, 2019 1:24 am    Post subject: MAC 3 LED Trim Indicator... Reply with quote

Hi mat

  I would have the 4 th wire would be the negative ground

Clive


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From: owner-zenith-list-server(at)matronics.com <owner-zenith-list-server(at)matronics.com> on behalf of Matt Dralle <dralle(at)matronics.com>
Sent: Sunday, February 17, 2019 12:33:05 AM
To: zenith-list(at)matronics.com
Subject: MAC 3 LED Trim Indicator...


Hello,

A fellow homebuilder friend of mine has a old-style three-LED (Red|Green|Red) MAC Trim Position Indicator. The Green LED was burned out, and the wires were cut off too short.

I told him I would try to replace the LED and lead wires. I got it apart without completely destroying it. But the internal wiring and polarity of the LEDs isn't that clear to me, nor is the actuation of it through a servo electronically. I'm not sure how to activate three LEDs with only three wires? (Or did there used to be four wires?)

Does anyone have a PDF schematic of the 3-LED MAC Trim Indicator that you could email to me?

Or better yet, does anyone have a spare or unused one of these they would like to sell me?

Thank you,

Matt Dralle




Matt G Dralle | Matronics | 581 Jeannie Way | Livermore | CA | 94550
925-606-1001 V | 925-606-6281 F | dralle(at)matronics.com Email
http://www.matronics.com/ WWW | Featuring Products For Aircraft


- The Matronics Zenith-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Zenith-List
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