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Sony Vaio vgn-sz483n lcd screen no backlight

The machine boots up and you can see the "VAIO" image in the back ground but the backlight does not come on. I suspect the LED backlight power supply fuse is blown. Does anyone know where this fuse is located? Much appreciated

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  • Hubert Thong
    Hubert Thong Jan 03, 2013

    Actually the micro fuse is located on a small triangular circuit bord
    on left side of MOBO. Need to remove the top cover to access it.
    Soldered a new micro fuse in and screen's back to life. Thanks guys

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  • Master
  • 32,281 Answers

If your laptop appears to boot up and the hard disk LED flashes, then the problem is probably a back light fault. This can be a faulty inverter or a faulty CCFL lamp. Please click on this link and follow my instructions to identify the fault and possible fix :- http://www.fixya.com/support/r3598095-faulty_laptop_lcd_screen

Posted on Jan 01, 2013

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SOURCE: Sony VAIO VGN-FJ3M/W does not boot.

Possible hard disk failure or hard disk controller failure.
if you feel confident remove the hard disk and replace - obviosuly make sure that there is not power running and remove the battery - replace hard disk then battery then power and try again.

Do you get any beeps? is the hard disk clicking? listen carefully to it and post your findings.

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SOURCE: I HAVE A SONY VAIO VGN-FJ1S, BOOTS UP, THEN GOES SLOWLY WHITE/?

I actually did have a problem that was similar the screen would lighten up after a min or so and moving the screen fixed it. The actual cause of the problem was a loose chip on the circuit board of the LCD, i re soldered it to fix it, could also be a bad LCD cable.

Posted on Mar 06, 2009

Geekman
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SOURCE: my sony vaio vgn-n365e screen is Dim

The fault could be a faulty CCFL lamp or inverter.
To determine if you have a LCD screen, inverter or video card problem, read this and follow these instructions.
Defective CCFL backlight, it may have the following symptom: Screen flashs on red/pink and off. Picture stays on in red and slowly be come normal. Picture flickering with dim display or appear black. Picture flickering on and off. All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replacing the CCFL lamp.
Connect an external monitor to your laptop and power the monitor up first then the laptop, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight. Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Check out
www.lcdparts.net
for parts, repair service and DIY info.

Posted on Jul 24, 2009

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SOURCE: How to Remove the bezel from a sony vaio

http://www.fonerbooks.com/laptop_8.htm

Posted on Mar 29, 2010

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Sounds like you broke your backlight and need a new LCD screen. A new one can be found here for $70.

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You may have a defective CCFL backlight, it may have the following symptom: Screen flashes on and off or displays reddish pink hue. Picture stays on in red and slowly be come normal. Picture flickering with dim display or appear black. Picture flickers on and off. All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replace the CCFL lamp.
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The fault could be a faulty CCFL lamp or inverter.
To determine if you have a LCD screen, inverter or video card problem, read this and follow these instructions.
Defective CCFL backlight, it may have the following symptom: Screen flashs on red/pink and off. Picture stays on in red and slowly be come normal. Picture flickering with dim display or appear black. Picture flickering on and off. All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replacing the CCFL lamp.
Connect an external monitor to your laptop and power the monitor up first then the laptop, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight. Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Check out
www.lcdparts.net
for parts, repair service and DIY info.

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