RGB LED help

This topic contains 6 replies, has 3 voices, and was last updated by flashteker@gmail.com 8 years, 4 months ago.

Viewing 7 posts - 1 through 7 (of 7 total)

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November 11, 2015 at 2:08 pm #1561

Kevin
Participant

Hi,

I was having trouble getting the RGB LEDs to work. The LEDs flash when I plug in USB, but nothing else happens.

November 11, 2015 at 3:00 pm #1562

flashteker@gmail.com
Keymaster

If a Keyboard is flashing and doesn’t work, it means it entered bootloader mode. There would be an electric short around LCtrl or LWin switch.
To check it, just desolder both switches, and replug your keyboard.
If it’s working, the problem is due to bad soldering of two switches.

Please tell me your test result.

Thanks.
Hojin.Yi

November 11, 2015 at 7:42 pm #1564

Kevin
Participant

Hi,

I’ll try the desoldering, but the RGB LEDs only flash once, and then stay turned off. The keyboard works, but the RGB Led
backlight doesn’t work.

November 12, 2015 at 6:11 am #1568

flashteker@gmail.com
Keymaster

Hi

Could you upload new firmware by using BootmapperClient program?
(For details http://blog.winkeyless.kr/183)

If it doesn’t work after uploading it, then please check the soldering of your RGB LED parts.
(For guide of soldering http://winkeyless.kr/soldering-guide/)

RGB LED has direction.

I hope it helps.

(Please let me know the result.)

Thanks.
Hojin.Yi

November 12, 2015 at 10:56 am #1574

LunarisDream
Participant

Yo OP, I had almost the exact same problem. The cause of it was bad soldering around a couple of the pins of a single RGB LED. Unfortunately, I don’t know if there’s a way to check with a multimeter, and your best bet would be to reflow and/or clean up the solder around the pads for RGB LEDs that appear to have messy soldering. Make sure the solder isn’t connecting different pads, and that all solder joints evenly cover the pads on the PCB and the legs of the RGB LEDs. Add more if it looks like there aren’t enough, and add a bit to ones that you feel like are barely enough, because I had a couple joints that seemed like they were fully covered but needed more solder.

Good luck.

December 3, 2015 at 4:20 pm #2499

Kevin
Participant

Hi,

I finally had time to fiddle with it again, but as it turns out, I fiddled too much.

I’m pretty sure I broke something, since the keyboard is now non-responsive and my MAC starts putting out “USB over voltage” alerts.

December 3, 2015 at 4:32 pm #2500

flashteker@gmail.com
Keymaster

Oh…

There must be some electric short.
First check the direction(polarity) of RGB LED(< -- it is the usual case when voltage overflow.) (To check it is the reason, desolder all RGB LEDs. And replug your keyboard to PC.) Or ... um... Check the all soldering points(pads) if there is short. If it doesn't work, could you send me some photos? My email is flashteker@gmail.com.

Thanks.
Hojin.Yi