geekhack
geekhack Community => Keyboards => Topic started by: derlg on Thu, 23 July 2020, 18:33:30
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I have a gh60 satan that I have been using for a long time now- then all the sudden the other day, it stopped working. I had it plugged into windows laptop at the time and windows says that there was a malfucntion with the device and that " a request for the usb device descriptor failed ". When i unplug/plug it in, all the leds turn on and the system recognizes that its been attached but the above error ensues. I tried launching EasyAvr and detecting it there- thought maybe it somehow got flashed or something. Nothing shows up.
I figured it was a driver issue- but no longer see any amtel drivers on that system. The windows laptop wont let me install any unsigned drivers- so I tried using a generic driver to see if I can get the keyboard running that way. No dice. I tried having the harddisk scanned, that didnt work. I launched easyav
I plugged it into my linux rig and it does the same thing- though I havent tried debugging it from there aside form trying to detect it using EasyAvr.
I'm all out of ideas and I'd really hate to have to put it to the curb... help, please?
Edit::
Voltage values: usb:5.05v esc(next to usb):4.75v ~`(opposite end of row):3.78v tab(under esc):2.79v return:4.55v shift(under return):4.79v ctrl(under shift):3.09v aside from ~` key, each key in each row has the same value except some rows have different values than others
Edit2::
When doing continuity test: LEDs read 1064, usb 1628, every key holds a different- fluctuating value.
Edit3::
Talked to blitzkraft and Boobuigi at #geekhack irc channel, and did a continuity test said mentioned above- but to the usb. I had one probe inside the male usbA port contacting each of the pins while the other was contacting the pins on the rear of the mini usb smd. It had appeared that some of the pins were not consistently making contact- so I had decided to desolder it out for inspection. In the midst of doing so- I ended up destroying the mini usb smd and had to order a new one off Ebay(here's hoping it comes in soon- but with the current USPS slowdown, who knows?). blitzkraft suggested parting out a device with a mini-usb already in it and try using that. That might be my only option right now with circumstances as they are. I will update this further after I have resoldered a mini usb back in and tested it.
Many thanks to blitzkraft and Boobuigi
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Check around the processor and make sure all the diodes are still attached and showing continuity.
I had this exact same issue with a GH60 and it turned out I had ripped off a diode.
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Backstory:: first time soldering this much on a single project; first time desoldering(didnt have sip connectors in the switches initially); had to replace mini usb connector at one point because keyboard fell with cord still inside. Board was previously working in this condition. I've tried EasyAvr and QMK Config tools.
https://imgur.com/a/sa7n1SZ
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