1. howto - disassemble the 40h

tehn — Wed, 13 Jun 2007 18:33:44 +0000

1. howto - disassemble the 40h
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something we test for while assembling is for malformed button pads. if the black conductive pill is slightly off, there's a potential when pressing a pad at an odd angle that the pill will hit the small exposed pad of the led. this will bridge the led and button systems, causing random-looking key triggers in that column.

tehn — Wed, 18 Apr 2007 17:53:16 +0000

something we test for while assembling is for malformed button pads. if the black conductive pill is slightly off, there's a potential when pressing a pad at an odd angle that the pill will hit the small exposed pad of the led. this will bridge the led and button systems, causing random-looking key triggers in that column.

the best way to test for this is using _40h_test.mxb in toggle mode. press every key at a variety of angles. you'll see vertical led flutter if there's a problem.

here's how to fix it:

1. remove the four hex screws. remove the base by carefully separating the silicone seal between the base and plate. you'll have to pull fairly hard to get them apart once the seal is broken.

2. orient the logic board down, towards you, and remove all of the pcbs and cables.

3. with an exacto knife, shave away a small splinter of the black pill of the problem pad.

4. reassemble. test thoroughly before reapplying the silicone glue layer. we use 100% silicone aquarium glue, which is cheap and very good.

[[insert picture of pad_trim1.jpg]]

[[insert picture of pad_trim2.jpg]]
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monome wiki repair - pad collision

1. howto - disassemble the 40h