geekhack
geekhack Community => Keyboards => Topic started by: y11971alex on Sat, 23 April 2016, 12:24:40
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Hello GH!
I received my 1390120 after a week of anxious waiting, along with two 1391472s, one with a completely disintegrated barrel plate due to DHL's gentle handling.
(http://i156.photobucket.com/albums/t2/themiclesia/5A34C58D-F662-4FA3-8755-5B01DE058243_zpstmtr6wop.jpg)
There are two mystery components on the PCB: a set of pins for what I thought was for indicator lights, and a partly transparent component on the board with 4.00 mHz p/n 1351544 and TEW5 29B.
:D
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MANDOLIN CRYSTAL IDENTIFIED
The 1390120 is a Model M that was made to be compatible with the XT (even though it also speaks AT), so it has no lock lights.
The transparent thing is a crystal oscillator that's only present on very early Model Ms.
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MANDOLIN CRYSTAL IDENTIFIED
The 1390120 is a Model M that was made to be compatible with the XT (even though it also speaks AT), so it has no lock lights.
The transparent thing is a crystal oscillator that's only present on very early Model Ms.
What's a Mandolin Crystal? Is that something like a quartz oscillator in a watch?
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Just an older component that one particular user in the past liked to hype up and talk about a lot.