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Missing symbols when typing fast on my Satellite L550
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Permlink Replies: 9 - Pages: 1 - Last Post: 20-May-2012 22:28 Last Post By: Silas
Alvige

Posts: 5
Registered: 18/03/12
Missing symbols when typing fast on my Satellite L550
Posted: 18-Mar-2012 07:21
 
Hello

My Satellite L550 laptop has the same keyboard problem than L670 series. More than often, some keys don't function, always the same: 1 6 a d s g j... When this problem occurs I can type using a second key as shift or space bar.

On L670 series this has been fixed by new BIOS but on L550 what could I do?

Sometimes it works properly but I need always to type slowly however it goes wrong...

Thanks a lot for a solution

Sorry for my poor English
Tonny

Posts: 3,225
Registered: 21/09/09
Re: Missing symbols when typing fast on my Satellite L550
Posted: 20-Mar-2012 13:26   in response to: Alvige in response to: Alvige
 
More than often, some keys don't function, always the same: 1 6 a d s g j... When this problem occurs I can type using a second key as shift or space bar.

To be honest it’s not known to me that the L550 would be affected by the same keyboard issue as the L670.
Did you test this notebook behavior using an external USB keyboard?
Do that…

If the same issue would not be available using the second external USB keyboard, then this means that the BIOS is ok and the internal keyboard is affected.
Alvige

Posts: 5
Registered: 18/03/12
Re: Missing symbols when typing fast on my Satellite L550
Posted: 21-Mar-2012 08:20   in response to: Tonny in response to: Tonny
 
Thanks

My keyboard runs perfectly since 2/3 days. When the problem occurred, I tested a USB keypad, it was OK.

Wait and see... I think it's a software problem because I can use the keyboard striking and holding another key to work (shift, space bar).

Of course, I test antimalware, startlist cleaning and so on... without result. I don't know why it runs well now.
Tonny

Posts: 3,225
Registered: 21/09/09
Re: Missing symbols when typing fast on my Satellite L550
Posted: 21-Mar-2012 09:27   in response to: Alvige in response to: Alvige
 
Well, it could be possible that some background processes stressed the CPU and this was the cause of missing keystrokes… but it great to hear that this is does not appear anymore… greetings.
Alvige

Posts: 5
Registered: 18/03/12
Re: Missing symbols when typing fast on my Satellite L550
Posted: 10-May-2012 11:19   in response to: Alvige in response to: Alvige
 
Hello

Same trouble is coming back, more en more often. Today the same keys (a, d, g, s, 1, 6) don't work even associated with other keys. Problem becomes deeper and deeper after weeks of good running.

USB keyboard runs but I must deconnect en reconnect it often.

Soft problem, it's obvious.

Please help
Tonny

Posts: 3,225
Registered: 21/09/09
Re: Missing symbols when typing fast on my Satellite L550
Posted: 10-May-2012 12:26   in response to: Alvige in response to: Alvige
 
USB keyboard runs but I must deconnect en reconnect it often.

This means that this issue is definitely NOT software or BIOS problem… it looks like you will need to replace the internal keyboard.
Alvige

Posts: 5
Registered: 18/03/12
Re: Missing symbols when typing fast on my Satellite L550
Posted: 10-May-2012 14:38   in response to: Alvige in response to: Alvige
 
No... I want to say that the external USB keyboard often stops running too so it must be disconnected and reconnected. For instance "o" key gives "6" and so on...
Best regards
Tonny

Posts: 3,225
Registered: 21/09/09
Re: Missing symbols when typing fast on my Satellite L550
Posted: 10-May-2012 14:49   in response to: Alvige in response to: Alvige
 
Ohhh…. Well…if its not the keyboard issue, then it could be possible that keyboard controller which is part of the motherboard malfunctions…
The controller cannot be replaced but the whole motherboard… but this is just a suggestion/theory
Alvige

Posts: 5
Registered: 18/03/12
Re: Missing symbols when typing fast on my Satellite L550
Posted: 20-May-2012 19:48   in response to: Tonny in response to: Tonny
Correct
New keyboard, problem is solved...
Silas

Posts: 2,124
Registered: 10/02/05
Re: Missing symbols when typing fast on my Satellite L550
Posted: 20-May-2012 22:28   in response to: Alvige in response to: Alvige
 
Great!
Thanks for the feedback.
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