geekhack
geekhack Projects => Making Stuff Together! => Topic started by: bazh on Fri, 07 February 2014, 09:58:51
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finally got some times to assemble my 38GT, the typing function works well but all the LEDs don't, I plugged into my PC and not a single light came :( I use pink LED with 330 Ohm resistors, what could be wrong with this :(
(https://lh4.googleusercontent.com/-h_Yk_e6VtK4/UvUCc-rF86I/AAAAAAAADTc/-HXUpnLGpBY/w1197-h894-no/14+-+1)
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Have you checked the simple stuff that's easy to overlook when one is excited? Have you toggled the the DIP switches that control the LEDs? Is it possible that when soldering the LEDs and flipping the board you accidentally reversed the anode and cathode on the LEDs?
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I double checked the LEDs' pole before put them in places, after plugged into PC I tried to turn all the possible DIP switch positions too but none of it works :(
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Well I am assembling a 38gt right now and no leds turned on at first, but I fiddled with the dip switch (used more force) and they turned on. Maybe check and replace the dip switch.
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Well I am assembling a 38gt right now and no leds turned on at first, but I fiddled with the dip switch (used more force) and they turned on. Maybe check and replace the dip switch.
What "fiddle" means ?
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I pressed the dip switch on and off a couple times using force.
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I tried that, maybe I'll do as GON tell, reinforce the solder joint of the DIP switch :/ maybe replace the transistor too to see if it helps