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geekhack Community => Keyboards => Topic started by: ethercy on Sat, 13 February 2021, 14:15:55

Title: Keyboard Wiring help
Post by: ethercy on Sat, 13 February 2021, 14:15:55
Hi everyone,

I have an old Phillips Mechanical Keyboard I have. Long story short the cable pins became detached and I forgot to take a picture. If anyone knows the correct pinout or how I can go about figuring it out, I'd really appreciate it.

Model: Philips SPK8401B
https://imgur.com/a/8QmMj1F



Title: Re: Keyboard Wiring help
Post by: Maledicted on Mon, 15 February 2021, 09:19:27
Hi everyone,

I have an old Phillips Mechanical Keyboard I have. Long story short the cable pins became detached and I forgot to take a picture. If anyone knows the correct pinout or how I can go about figuring it out, I'd really appreciate it.

Model: Philips SPK8401B
https://imgur.com/a/8QmMj1F

This might be more of a bump to get the attention of people who do this more often, but here's a picture of what colors each USB wire usually corresponds with:

(https://www.electroschematics.com/wp-content/uploads/2010/01/usb-wiring-connection.jpg?fit=1024%2C768)

It looks like yellow is sometimes Data + as well, but it may be a ground running back to the USB connector itself.

You could verify all of that with a multimeter or continuity tester. You may need to do the same on the PCB to try to identify at least the +5v and ground. If you find the controller (usually the biggest/longest IC on the PCB) and can find a schematic of it, you might be able to trace each pin on that female JST connector back to the controller to find the pinout. +5v and ground matter the most. You can guess on the rest and adjust until it works.

It would sure be a lot easier if someone with the same board just took theirs apart and got a quick picture though.