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geekhack Community => Keyboards => Topic started by: breitling on Thu, 31 December 2015, 14:13:23

Title: Wired USB Cable wrong and fried my Leopold Numpad
Post by: breitling on Thu, 31 December 2015, 14:13:23

Hey guys, wondering if anyone can provide some insight here.. I was too tired when I wired my new USB cable and got the V- and V+ mixed up and fried my Leopold Numpad when I plugged it in (I also did a detachable cable mod to it a while back). I looked at the PCB and it looks like the Capacitor(?) at C10 is the one that smoked out and turned black. Not sure if the controller is still ok. I have fried some IC's before on other non-keyboard projects and I knew right away I fried this when I smelled the burnt out parts. If I replace the C10 cap is it likely to fix the problem do any of you know? Would like to salvage this if possible. I found a pic of the original C10 and it looks orange, and I can't see the writing on it and don't know the value of the Cap. Can anyone help?

Here are some pics.

Title: Re: Wired USB Cable wrong and fried my Leopold Numpad
Post by: nathanrosspowell on Fri, 01 January 2016, 16:32:23

(http://i.imgur.com/J682zTx.jpg)

I believe the code on the part to be:

Code: [Select]

106C
10J34

It was too hard to capture with my cell phone :)

Title: Re: Wired USB Cable wrong and fried my Leopold Numpad
Post by: breitling on Fri, 01 January 2016, 17:42:08

Thanks so much! This means it should be a 10uF 5% cap. I will report back and let everyone know how to goes for posterity.

Title: Re: Wired USB Cable wrong and fried my Leopold Numpad
Post by: breitling on Tue, 02 February 2016, 23:22:00

My capacitors finally arrived and I soldered one in and bam! Works like a charm! In case anyone else wires one of these backwards on the USB you know you can fix it :)

Title: Re: Wired USB Cable wrong and fried my Leopold Numpad
Post by: 0100010 on Wed, 03 February 2016, 17:37:03

Always refreshing when one posts a followup!

Title: Re: Wired USB Cable wrong and fried my Leopold Numpad
Post by: nathanrosspowell on Wed, 03 February 2016, 20:23:46

Thanks for verifying and glad it worked out for you  :thumb:

Title: Re: Wired USB Cable wrong and fried my Leopold Numpad
Post by: breitling on Wed, 03 February 2016, 21:29:33

Quote from: nathanrosspowell on Wed, 03 February 2016, 20:23:46

Thanks for verifying and glad it worked out for you  :thumb:

Thanks for your help! Couldn't have done it without you taking the time to check it out for me.