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geekhack Community => Keyboards => Topic started by: cupr on Thu, 09 January 2014, 14:07:59

Title: Ducky DK 9008S
Post by: cupr on Thu, 09 January 2014, 14:07:59

Hello.
A year ago a bought DK 9008S. And it was the best kb I ever used.
But sometimes ago I faced with an issue with one switch ("R" letter), suddenly it stopped working after some time in could wor again.
I tried solder that switch but it didn't help at all. It was my first mechanical keyboard. Maybe someone know how to resolve this issue/
KB
DK 9008S
p/n Ducky KB 9008S-B
s/n SACLE 10647
(http://i.imgur.com/VZjTWJp.jpg) (http://i.imgur.com/DcV7UiG.jpg) (http://i.imgur.com/IhS2bvB.jpg)

Title: Re: Ducky DK 9008S
Post by: CPTBadAss on Thu, 09 January 2014, 14:09:52

Looks like you have cold solder joints. The joints need to be shiny not dull.

Redo the joints so they look like the other joints on the other switches and you should be ok.

Title: Re: Ducky DK 9008S
Post by: rowdy on Thu, 09 January 2014, 15:27:07

Welcome to Geekhack!

If you are redoing the solder joints, it might be an opportune moment to also replace the switch, just in case it is a faulty switch.

Title: Re: Ducky DK 9008S
Post by: cupr on Thu, 09 January 2014, 15:35:27

I have already replaced this switch, but it didi't resolve my issue, so you advice to redoing all solder joint ?

Title: Re: Ducky DK 9008S
Post by: rowdy on Thu, 09 January 2014, 15:40:01

Quote from: cupr on Thu, 09 January 2014, 15:35:27

I have already replaced this switch, but it didi't resolve my issue, so you advice to redoing all solder joint ?

As CPT said, the joints don't look shiny, and might not be providing good conductivity.

Title: Re: Ducky DK 9008S
Post by: BlueBär on Thu, 09 January 2014, 15:59:02

Can we also get a close-up of the solder joints on the R? On the left side it kinda looks like a broken pad.

Also you don't need to redo ALL the solder joints, just on the R switch.

I'm sorry to say this but the soldering you did looks really bad. Did you watch a tutorial on soldering first or did you ever do some soldering before?

Title: Re: Ducky DK 9008S
Post by: laffindude on Fri, 10 January 2014, 01:01:00

Bridge the 2 pads of the diode to see if it is a bad diode.

Title: Re: Ducky DK 9008S
Post by: BlueBär on Fri, 10 January 2014, 02:10:40

Take a closer look at the solder joints in the "R" - I highly doubt it's the fault of a broken diode.

Title: Re: Ducky DK 9008S
Post by: cupr on Fri, 10 January 2014, 12:43:37

There is closer 'R' switch.
(http://i.imgur.com/0MQRi9e.jpg) (http://i.imgur.com/zKXujb1.jpg)
I agree my soldering is bad, didn't do thana for 8 years.

Bridge the 2 pads of the diode to see if it is a bad diode. You mean do this by wire?

Alsoo my tools are outaged  :)
(http://i.imgur.com/mSdhAmX.jpg)

Title: Re: Ducky DK 9008S
Post by: rowdy on Fri, 10 January 2014, 17:04:50

:eek:

With that soldering iron, you have done a good job!

But with a better iron it might have been perfect.

From those pictures, I would suggest that ideally the joints should be redone.  Also check the continuity between the pins you have soldered and the pins supposedly connected via the traces on the PCB to make sure the traces were not damaged.

Title: Re: Ducky DK 9008S
Post by: cupr on Sat, 11 January 2014, 09:35:28

Bougth some stuff
(http://i.imgur.com/mfJ1qxxs.jpg)
Resolder switch, and it began work :)
(http://i.imgur.com/KOwz1Ums.jpg)
Now testing it, in previous try it has worked two days.

Title: Re: Ducky DK 9008S
Post by: cupr on Sat, 11 January 2014, 10:29:24

And again it's back
after couple of hours it stopped working

Title: Re: Ducky DK 9008S
Post by: cupr on Mon, 13 January 2014, 12:28:12

Resolder it once again, now works!

Title: Re: Ducky DK 9008S
Post by: BlueBär on Mon, 13 January 2014, 13:27:45

I think you just need to train your soldering skills ;)

Title: Re: Ducky DK 9008S
Post by: Linkbane on Mon, 13 January 2014, 15:24:07

Quote from: cupr on Mon, 13 January 2014, 12:28:12

Resolder it once again, now works!

Evidently so, nice job!