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Author Topic: Key Only Registering At Bottom  (Read 1521 times)

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Offline terrpn

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Key Only Registering At Bottom
« on: Mon, 23 June 2014, 16:57:54 »
ok............you smart guys-- i need a little help

why are a couple of my keys only registering when i press near the bottom of the keycap and no where else?

i tried pressing down or squaring the [alps] switch if you will, but nothing.

i don't want to break anything as it is n older board.

i took apart and the solder looks good?
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Offline Kagusaki Wolf

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Re: Key Only Registering At Bottom
« Reply #1 on: Mon, 23 June 2014, 17:29:03 »
What happens if you press the middle part all the way down and slide your finger towards you slowly?
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Offline jacobolus

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Re: Key Only Registering At Bottom
« Reply #2 on: Mon, 23 June 2014, 17:37:02 »
If you open the switch you might be able to figure it out. My guess is that by bending the leaf attached to the switchplate to have a slightly sharper 'kink' in it, you’ll be able to fix it. It has probably just slowly bent into a straighter-than-original shape with age and use. As a result, when the slider goes straight up and down it doesn’t sufficiently push the bump in that actuator leaf into the little metal foil contacts.
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Offline terrpn

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Re: Key Only Registering At Bottom
« Reply #3 on: Mon, 23 June 2014, 18:17:43 »
Quote from: Kagusaki Wolf on Mon, 23 June 2014, 17:29:03
What happens if you press the middle part all the way down and slide your finger towards you slowly?

aaaaaaaaaaaaaa

dddddddddddddddddddd

it registers

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Offline terrpn

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Re: Key Only Registering At Bottom
« Reply #4 on: Mon, 23 June 2014, 18:19:02 »
Quote from: jacobolus on Mon, 23 June 2014, 17:37:02
If you open the switch you might be able to figure it out. My guess is that by bending the leaf attached to the switchplate to have a slightly sharper 'kink' in it, you’ll be able to fix it. It has probably just slowly bent into a straighter-than-original shape with age and use. As a result, when the slider goes straight up and down it doesn’t sufficiently push the bump in that actuator leaf into the little metal foil contacts.

makes sense............

will have to remember that
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Offline tp4tissue

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Re: Key Only Registering At Bottom
« Reply #5 on: Mon, 23 June 2014, 18:21:09 »
report back after you've broken it in...

10,000 key presses per affected key...

ready. set. go...
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Offline terrpn

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Re: Key Only Registering At Bottom
« Reply #6 on: Mon, 23 June 2014, 19:48:31 »
Quote from: tp4tissue on Mon, 23 June 2014, 18:21:09
report back after you've broken it in...

10,000 key presses per affected key...

ready. set. go...
Show Image


ha!

u ain't right
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Luga G80-1865/MX Reds + Dolch G80-1813/MX Blues + G80-3700HQAUS + DK9008G2 Pro/MX Browns Thick PBT + DK9008G2 Pro/MX Clears Thick PBT +  QFR TKL/Ghetto Greens + Cherry G80-1800/MX Blues + IBM Model M SSK Bolt Modded + IBM Model M + IBM Model F + IBM AT F + Cherry G80-1000 (HAD)/MX Vintage Blacks + Razer BWU/MX Blues + Leading Edge DC2214/Blue Alps + Compaq MX11800/Browns + Chicony 5181/Monterey Blues + Chicony 5161/MX Black Cherry Clone + Focus 2001/White Alps + Chicony 5191/White Futabas + Olivetti ANK27-101 + Dell (Old Logo) AT101/Black Alps + NMB RT8255C+/Black Space Invaders + Unitek K260/Green Alps + Apple M0116/Orange Alps + AEK II M3501/Cream Alps + AEK M0115/Orange Alps + NEC  APC412/Blue Sliders + NEC APC410/Blue Sliders + Omnikey /White Alps + Wang/Yellow Alps (Omrons) + Laser/White SMK + Fame/Blue Aruz + AEK II M3501/Salmon Alps + Zenith ZKB-2R/Green Alps + Wang 724/Orange Alps + DK1087/Green Alps + Zenith ZKB-2/Yellow Alps + Dell Old Logo AT101/Salmon-Pink Alps + Leading Edge AK1012/White SMK's + Magitronic SK-1030/White (Linear) Futaba's + Packard Bell/White (Clicky) Futaba's + Datacomp DFK101/White  Alps + SGI AT101/Dampened White Alps + NMB AQ6RT-72511/Grey Space Invaders (Hi-Tek) + Datacomp/Blue Alps + Phillips 2812/White Space Invaders (Linear) + Dah Yang K251/Vintage MX Blues + Chicony 5161/DS Caps/Vintage MX Blue + Archie-NMB AQ659ZRT-725/Black Space Invader (Tactile) + IBM Model M 71G4644 (RD) Bolt Modded with Soarers Converter + IBM Model M Silver Label 1390131 + Cherry G80-1501/Vintage MX Clears + Focus FK8000/Linear Futabas + Gateway 2000 Anykey Programmable/Maxi-Switch + Dell GY13PVAT101/Dye Sub Caps/Salmon Alps + Chicony 5161/White Alps + AST K0B101/Slider over RD + Qtronix QX-32H + Everex/NMB RT8255CW+ Black Space Invaders-Split Erase + Tandon/NMB AQ659ZRT-101A/Beige Space Invaders + Cherry G80-11903 MNRUS/MX Blacks + Apple IIGS A9M0330/SMK Whites + WYSE PCE/MX Blacks + Chicony 5160AXT/Clicky Futaba + Cherry G80-0528/Vintage MX Blacks + Dell AT101/Linear (Modded) Black Alps+Topre 55g
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