wired P/S2 keyboard problem

October 11, 2012 at 23:30:34
Specs: Windows 7
iball make wired P/S2 keyboard ez9999 was not working after falling. no led was on. when disconnected hot ,
found 4 wires red,green,whte,black.
red was connected to pin4 -Vcc.
black to pn3- gnd.
green pn1 ,white pn5 were disconnected.
hence soldered green to data and white to clock.
when reconnected to desktop (hot) all led are blinking cntineously. kb not wrking.
Can data and clock connections got reverse connected.
(OS)windows vista

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October 12, 2012 at 00:37:24
Let me try that again.

Were the wires loose because of your disassembly procedure? If so when resoldering them if it doesn't work one way then I guess try another. There were only two that were loose. If it still doesn't work then wiring isn't the problem.

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October 12, 2012 at 22:12:22
no wires were not loose because of disassembly procedure. i expect a workable answer.

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October 12, 2012 at 23:40:56
Well, like I said, you've got two loose wires and two places to solder them. That leaves you two options. Either green goes to clock and white goes to data OR green goes to data and white goes to clock. If one way doesn't work the other must--if it's only loose wires that are the problem.

If for some reason you just don't want to swap the wires you can get an ohmmeter or continuity tester, put one lead on the wire in question and the other lead on a pin in the keyboard connector. Test each pin. When it indicates continuity then you know that pin is connected to whatever wire is attached to the other lead. Then go here:


for a diagram of the keyboard pinout. That shows you the function of each pin. Since you now know what wire is connected to the pin (because of the continuity testing) and you know the function of that wire (because of the pinout diagram) then you know where to attach it--either clock or data.

It doesn't get more 'workable' than that.

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October 13, 2012 at 07:05:38
In question i have mentioned all wire terminals with pin numbers (after refering to a standard site.) also i have checked all the wires for continuity. There is no confusion regarding connection interchange (data & clock) until you are firm regarding that there will not be any damage to circuit. thanks.

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October 13, 2012 at 17:45:17
I don't know what you're talking about. There can be no damage if you connected them correctly. There's only two ways to connect them. Either you connected them right originally and the problem is not with the wiring (since it doesn't work) or you connected them incorrectly and your only choice now is to reverse them and make the correct connection.

I doubt you can damage anything if they're connected wrong but I have no way of knowing for sure.

Maybe you should just get a new keyboard.

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