screen problem, inspiron 1520.

hi new to the forum i hope to pick up some valuable info. laptop has very dark screen on display,very ocasionally will boot normally everything nice and clear.connected to spare screen was ok till rebooted then back to square one dont think system related or motherboard,have run tests with hirens.if i hold torch to front of screen can just about make out the desktop not sure weather inverter is kaput, or needs a new screen, or bad connection between screen and base not mine so reluctant to dismantle without a bit more info. i would appreciate any guidance.

 

Bad backlight or inverter. Try replacing the inverter first, and if that doesn't work, you can consider replacing the backlight itself or the entire panel.

 

thanks wolfie, a great help.note booted up today connected to spare pc screen via vga connection that screen also not lit up no picture. can hear windows in the background,that makes me think corrupt graphics card but aint totally sure.what do you think?

 

Hi raysalaf58,

This could be because of the LCD or a corrupted graphic card. To isolate the issue you may try the following steps.

• Please make sure the AC power is connected.
• Adjust the brightness using keystrokes.
• <Fn> and up-arrow key Increases brightness on the integrated display only (not on an external monitor).
• Press and hold the ‘Fn’ key and turn on the system (PSA – Diagnostics) and wait till you get 2 beeps. Once you hear 2 beeps and no display on
the screen please press the key ‘N’ and see if there is any display on the Screen.
• If the screen is fine it will display some color bars during this process.
• When you have the external monitor connected , once you get the Windows loading sound please press Fn + F8 to check if you are getting the
display on the external monitor. If you don’t see any response on the monitor in the first attempt please try the Fn + F8 again two or three
times to check if the display is getting switched to the external monitor.
• If the issue is only with LCD, there will be a display on the external monitor.

I hope this helps. Please do write back in case you need any further assistance.

Thanks & Regards
Swapnajan MC
#iworkfordell

 

have tried the fn+pwr got the colored bars on screen (although the screen was very dark).occasionally boots with left half of screen bright right half dark ,if i leave switched on screen goes completely dark this happens after about two hours on power...thanks again for your help.

 

have tried the fn+pwr got the colored bars on screen (although the screen was very dark).occasionally boots with left half of screen bright right half dark ,if i leave switched on screen goes completely dark this happens after about two hours on power...thanks again for your help.note just tried the fn+f8 for external monitor and image appeared every thing fine on external, but dark on laptop monitor.please advise.

 

Hi,

This indicates that the issue is with LCD screen. If the Graphic card was faulty the image on the external monitor would also be same as the laptop display. Please consider replacing the LCD screen. Do let us know if this system is covered under the warranty.

Please do write back in case you need any further assistance.

Thanks & Regards
Swapnajan MC
#iworkfordell

 

no unfortunately its not covered. thanks.

 

Hi,

The LCD screen will need to be replaced. You can either contact the Dell out Of Warranty services Department of your respective region or you may also check for a suitable LCD screen locally.

Please do write back in case you need any further assistance.

Thanks & Regards
Swapnajan MC
#iworkfordell

 

thanks everyone for your helpful input ,i managed to solve screen problem by replacing the inverter laptop up and running again.