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Solved Some keyboard keys not working

Amd / Fx 6300
January 24, 2021 at 04:56:49
Specs: Windows 7, 12 GB
The keys ' 1 Q A Z Esc and Tab key are not working on my keyboard. Rest all are working fine.

I've tried to clean the keyboard from the inside as well but didn't solve the issue.

Any ideas on how to get this fixed?

message edited by harspad


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✔ Best Answer
January 24, 2021 at 07:40:54
harspad said:

> I couldn't find any broken connections inside the keyboard.

It is very unlikely that you would see such a broken connection
by eye. It would almost certainly be a single break that causes
these keys to not work, and it would likely be where a copper
trace on a printed circuit board connects to one of the keys or
some other component on the board. Testing with a continuity
tester would be your best bet to locate it. If this happened to
me, I'd try to find the break, but most people would just get a
new keyboard and be done with it.

-- Jeff, in Minneapolis



#1
January 24, 2021 at 06:02:49
A connection is probably broken in the matrix under
the keys that connects them together.

You didn't say what kind of keyboard it is. It should be
obvious that the type of keyboard determines both how
it can go bad and how it might be fixed.

A very few keyboards have key switches that are normally
closed, and open when pressed. If such a keyswitch fails
to close when you stop pressing on it, that key and all the
keys connected to it will be unable to function. So in this
case, the problem could be in a single keyswitch. You can
see this kind of mechanical switch by removing the keycap.

But more generally, plug-in keyboards are cheap.

-- Jeff, in Minneapolis


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#2
January 24, 2021 at 06:32:45
It's a usb wired keyboard. (Amkette xcite pro)

I couldn't find any broken connections inside the keyboard.


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#3
January 24, 2021 at 06:45:46
Just buy/borrow a cheap USB keyboard and try that. If it works, you know for sure your Amkette keyboard is defective.

"Channeling the spirit of jboy..."


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Related Solutions

#4
January 24, 2021 at 06:50:05
Sometimes it accumulated dirt under the places where keys make contact. I note these keys are all in the same side/area of the keyboard; almost in column as it were.. Carefully recheck that area and see if there is any ribbon contact that isn't quite as it ought to be.

Though if you test your system with another keyboard and that one is OK, then I'd simply abandon the faulty one and replace it with another new keyboard.


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#5
January 24, 2021 at 07:40:54
✔ Best Answer
harspad said:

> I couldn't find any broken connections inside the keyboard.

It is very unlikely that you would see such a broken connection
by eye. It would almost certainly be a single break that causes
these keys to not work, and it would likely be where a copper
trace on a printed circuit board connects to one of the keys or
some other component on the board. Testing with a continuity
tester would be your best bet to locate it. If this happened to
me, I'd try to find the break, but most people would just get a
new keyboard and be done with it.

-- Jeff, in Minneapolis


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#6
January 24, 2021 at 14:14:00
Most likely the 'circuits' in the keyboard are simply conductive paths etched on plastic. One of those paths can crack affecting several nearby keys. As already mentioned, try replacing the keyboard first.

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#7
January 24, 2021 at 15:01:19
"Most likely the 'circuits' in the keyboard are simply conductive paths etched on plastic."

Yep, even though the device the OP refers to appears to be a "higher-end" keyboard (apparently only available in India), there's nothing to suggest it's made any better than the dinky $5 iHome keyboard from BigLots.

"Channeling the spirit of jboy..."


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#8
January 24, 2021 at 15:54:57
higher end - likely made in China, just over the northern border...?

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#9
January 24, 2021 at 23:09:11
So is there a way to repair or replace the circuit board?

The keyboard is not that old so don't know how this problem occurred.


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#10
January 25, 2021 at 02:04:51
"So is there a way to repair or replace the circuit board?"

A new keyboard would likely be as cheap, and you'd void any warranty by trying to do so...which leads to:

"The keyboard is not that old so don't know how this problem occurred."

If it's under warranty, then return it.

You've not even said for certain that it's the keyboard...have you tried another? Very slight possibility that it could be something in the PC (but it'd be highly unlikely)

"Channeling the spirit of jboy..."

message edited by T-R-A


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#11
January 25, 2021 at 08:23:55
The fact that just the ' 1 Q A Z Esc and Tab keys are affected
tells me it is definitely the keyboard. I'm almost certain the
key-reading routine in the computer does not know how the
keys are connected together in the keyboard, so even if the
routine was corrupted, it wouldn't be able to affect only that
group of keys.

-- Jeff, in Minneapolis


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#12
January 25, 2021 at 09:02:32
I agree it's likely an issue within the keyboard circuitry; and as per DinC likely a trace on the circuit board which has failed in some manner.

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#13
January 25, 2021 at 13:39:06
harspad said:

> So is there a way to repair or replace the circuit board?

As I said in reply #5, testing with a continuity tester would
be your best bet to locate the break. Anyone would need
to know exactly where the break is in order to determine
whether it is possible or practical to try to fix it.

-- Jeff, in Minneapolis


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#14
January 25, 2021 at 14:14:55
Unless you’re really adept/skilled and experienced at working on fine level circuit boards, you might simply waste your time and effort.

An inexpensive replacement would be a wiser path?

And as previous by others here, have tested your computer using another keyboard.

Which having said, the money here is on your current keyboard being faulty, and not really worth the effort to repair?


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#15
January 25, 2021 at 22:28:57
Even though price-wise it's not practical, if you're insistent on repairing it or are looking for the same model, maybe you can find one on ebay.

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#16
January 25, 2021 at 22:45:49
Hi,

I haven't tested my pc with another keyboard but as you all mentioned, the issue is with the circuitry.

So I'll buy a new keyboard instead of repairing it.

Thanks for your help everyone.


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