Author Topic: Need some advice for some Nighfox PCB repair  (Read 1069 times)

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Offline ju1es773

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Need some advice for some Nighfox PCB repair
« on: Mon, 23 November 2020, 03:27:52 »
Hi all, first time poster here!

So I was pretty ambitious with my first keyboard build, and inevitably that's come to bite me. I purchased a Nightfox built with Hako Trues on eBay with the goal of changing the switches to Zealios, replacing the stabs, and a few other minor mods. Most of them went successfully, but unfortunately, I'm having some issues with two switches, and I could use a little help figuring out how I'm going to resolve them!

Firstly, and most major: Switch #54, the letter "N" is non operable after replacing the switch. Looks like I've ripped the pad that connects to the diode. Switch #53 also has some similar pad damage, but it is functional so I plan on leaving it be unless it starts displaying issues. I figure I have two options here:

A) Run a wire from the switch leg/remaining pad to the pad of the diode. This is scary because I'm concerned about damaging the diode's pad.

B) Scrape off some of the solder mask, and either solder directly or run a wire to the exposed trace. This also concerns me, just out of fear of making things worse than they already are.

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The second issue: Switch #63, the Windows key, is acting pretty funky. I don't know exactly what's going on, but it seems to activate more on the release of the switch rather than the press. I believe its shorting to the diode trace via the unused through hole pad on the left side of the switch. I could use some advice on how to keep these pads from bridging, because after problem #1 I'm worried about causing further damage to the PCB, and I also can't clearly see where they're touching.

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I would really appreciate any advice/recommendations on how to get things sorted!

Take care and be well!

Offline yui

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Re: Need some advice for some Nighfox PCB repair
« Reply #1 on: Mon, 23 November 2020, 04:35:30 »
for your 1st problem both options A and B are valid, option B is harder to pull off but you can't kill it more than it is with option A if you have a regulated soldering iron set it to 350°C max and do not hold it to the diode for more than 10 seconds and you will be safe (depending on the size of the diode they can take longer heat times) if it is unregulated it is a bit more dangerous but still plenty feasible, just heat the diode for as short a period of time as you can.
for your 2nd problem i think either you can buy solder wick or just clean your iron and touch it to the bridge and it should remove it, just do not scrape, especially if you have an unregulated iron or you use it at 400°C or more
vi vi vi - the roman number of the beast (Plan9 fortune)

Offline ju1es773

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Re: Need some advice for some Nighfox PCB repair
« Reply #2 on: Thu, 26 November 2020, 03:09:58 »
Thank you for the feedback! I really appreciate it!

I was able to get these issues resolved, I was nervous about soldering the wire to repair the N key but it ended up being easier than I thought.

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For the Windows key issue, after spending about 20 minutes trying to fix the bridged pads, I noticed that the switch would activate even when only lightly tapped. I replaced the switch with a spare one, and sure enough that solved the problem.

I'm loving this keyboard so far, thanks again for the help!