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ausGeoff

58 Posts

10955

October 10th, 2012 07:00

Inspiron Backlight "Flickering" Intermittently

Hi there guys... first-time DELL user here. :emotion-1:

Currently using a one-month-old Inspiron 17R-SE-7720 service tag [deleted by member] with back-light problems as follows:

  • Intermittent and momentary dimming of back-light
  • Occurs at irregular times and lasts less than a second
  • May not happen for 30 or 40 minutes then occur half a dozen times in 10 minutes
  • Change in brightness barely perceptible but obvious enough to be annoying
  • Have (re)downloaded all current drivers
  • Have carried out all appropriate DELL diagnostics (all show OK)
  • Position of lid/hinges makes no difference
  • Problem not apparent when laptop new but started approx 1 week ago
  • Laptop always used on 240V power

Any suggestions greatly appreciated.

Thanks, Geoff.

.

DELL-Vikram M

1.1K Posts

October 10th, 2012 08:00

Hi Geoff,

Thank you for the quick response. Below is the screen shot how to edit a post:

Click on it and you should be able to edit the post. In case you are not getting this option, the moderator should delete the service tag soon. Please perform the troubleshooting steps and let me know the results.

Please reply if you have any further questions.

DELL-Vikram M

1.1K Posts

October 10th, 2012 08:00

Hi Geoff,

Are you facing this issue with adapter plugged in or with the battery only? Also, check if the port is loose where the adapter connects to the system. I will recommend you to change the power plan settings on your system:

  1. Click on 'Start'.
  2. Click on 'Control Panel'.
  3. Click on 'Power options'.
  4. Click on 'Change plan settings' depending on the power plan selected on your system.
  5. Click the drop down arrow next to 'Dim the Display' and change it to 'Never' for 'On Battery' as well as 'Plugged in'.
  6. Click on 'Save changes' and observe your system.

You can also connect an external monitor on your system to check if the same issue occurs.

In case the issue is not resolved, update the system BIOS:

Note: Please save any unsaved data as your system will restart automatically after updating the BIOS. Disconnect all the external peripherals like printer, camera, scanner, external hard drive, flash drive etc. Also, the battery should be charged 10% or above.

  • Click on the link: http://dell.to/SPCtk8
  • Enter your system's service tag.
  • Go to 'BIOS' and select the BIOS.
  • Click on 'Download Now'.
  • Select 'Single-file Download' and click on 'Continue'.
  • Click on 'Run' and follow the on screen instructions.

I have made a note of the service tag of your system. Please remove the service tag from this forum for security issues.

Keep me posted. Please reply for any further questions.

ausGeoff

58 Posts

October 10th, 2012 08:00

Thank you kindly Vikram.

I'll work through your suggestions and let you know how it went.

I can't find any "edit" function on the thread. (No button, no green pencil)  Can you please let me know how to delete my service tag text.

Regards,

Geoff.

ausGeoff

58 Posts

October 10th, 2012 09:00

Hi again Vikram,

Thanks for the editing tip - have now done so.

The "never" option for the screen dimming (on battery and plugged in) seems to have fixed the flickering issue.

Will let you know if the problem recurs.  Fingers crossed LOL.

Thank you for your prompt assistance.

Regards, Geoff.

DELL-Vikram M

1.1K Posts

October 10th, 2012 13:00

Hi Geoff,

I am glad to hear that the system is working fine now. Please let me know in case the issue re occurs. I will be glad to assist you.

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