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Screen too dim, Have tried new inverter and LCD

Started by Francisck , Nov 11 2009 12:26 PM

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12 replies to this topic

#1 Francisck

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Posted 11 November 2009 - 12:26 PM

I am at my wits end, I have replaced both the Inverter and the LCD Panel on a Toshiba satellite m45, and the screen is still too dim.

I am just looking for some help perhaps a quick comment to tell me "YOU FORGOT TO DO THIS"

I've tried with 3 different inverters from the same (or other satellites) just to the same result, Could it be something on the motherboard?

Let me know!

Best Regards,
Francisco

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#2 RainbowSix

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Posted 11 November 2009 - 02:08 PM

It's the video card, most likely.
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#3 Francisck

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Posted 11 November 2009 - 02:12 PM

I figured as much, any quick way to determine that for sure? a multimeter?

#4 RainbowSix

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Posted 11 November 2009 - 02:19 PM

I don't have much experience with laptop hardware, so I couldn't tell you.
The graphics card is built-in to the motherboard. I don't think it can be replaced without replacing the entire motherboard.
[ Antec 1200 v3 | Gigabyte GA-890FXA-UD5 rev. 3.1 | AMD Phenom II x6 1090T (overclocked to 4GHz) | Corsair XMS3 4x4GB DDR3 1600 | COOLER MASTER Silent Pro 600W & Visiontek Juice Box 450W | SAMSUNG 470 Series 64GB SSD | WD Caviar Black 640GB & Samsung Spinpoint 2TB HDD | 2x XFX Radeon HD 5770 in Crossfire | SAMSUNG 22X DVD±RW | Microsoft Windows 7 Professional 64-bit]

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#5 techextreme

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Posted 11 November 2009 - 02:25 PM

Have you tried changing the brightness on the screen?

On my toshiba the key combination is: FN+F6 to lower and FN+F7.

Worth a try.

Techextreme

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#6 Francisck

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Posted 11 November 2009 - 02:43 PM

yeah, I know the video card is built into the motherboard, I was just hopping I could determine if it was the video card before taking the computer all apart and replacing the motherboard.

Also, Techextreme thanks but i have already tried the fn and brightness keys!

#7 techextreme

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Posted 11 November 2009 - 03:31 PM

Is there a screen brightness setting in the BIOS of the laptop?

Some have a setting for that.

If not, my only other suggestion would be a bulb problem in the panel.

The video card would probably not be the culprit as you can still "see" images.

Edited by techextreme, 11 November 2009 - 03:32 PM.

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#8 Francisck

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Posted 11 November 2009 - 03:37 PM

Again, a new LCD was purchased and plug in and I still see the same problem. As far as the bios I have yet to look in there.

#9 techextreme

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Posted 11 November 2009 - 03:40 PM

If you have a cable that resembles this, it is very possible that one of the very thin wires in it has broken. These type cables are notorious for breaking around the "bend" point.

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#10 Francisck

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Posted 11 November 2009 - 05:06 PM

Yes, that cable was also replaced when the LCD screen i purchased same in.

#11 techextreme

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Posted 11 November 2009 - 06:29 PM

I know this is going to sound monotonous but....

was the screen a refurb, new from the manufacturer or ebay?

Techextreme

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#12 Francisck

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Posted 11 November 2009 - 06:42 PM

I know this is going to sound monotonous but....

was the screen a refurb, new from the manufacturer or ebay?


It was an ebay store from whom i purchased many items.

Even if, the original screen had the same problem so i doubt it's a problem with the screen

#13 techextreme

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Posted 11 November 2009 - 07:20 PM

This may help you test the "input" side of the inverter.

Click Here.

Hope this helps,

Techextreme

"Admire those who attempt great things, even though they fail."

-- Seneca
 

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