Question about Toshiba Satellite M45-S331 Notebook

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Faulty Inverter Recently, my inverter on my Toshiba Laptop M45 S331 died. This occurred about a week after I put some additional RAM in my computer. Could there be a connection between the RAM (possibly bad?) and the inverter, or is this more likely just a coincidence. I just replaced the inverter and my screen now works fine, but I am hoping to avoid a repeat of this problem in the future.

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No a ram will not do that I think it was just its time.

Posted on Mar 04, 2008

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When my m45-s331 laptop is turn on for a long time, if i put the monitor off, maybe in not be turn on again and it's brightness become very low and hardly it can be seen! what should i do?


It's possible that the LCD lid close switch stuck in the "closed" position and the back-light stays off even when you open the LCD screen or turn on the laptop. The switch turns off the back-light when you close the LCD display to save the laptop battery power.

If that didn't fix it then there are 3 things that could have gone wrong:

1. Video cable connection from inverter to LCD got loose. To check this, follow instructions from step 3 on how to open the LCD and check if cable is fitted properly.

2. The video inverter is faulty
The screen inverter failure is very similar to the back-light lamp failure. In both cases the screen gets very dark and the image on the screen becomes very faint, barely visible under a bright light. If it's still under warranty, take it for a replacement. You can replace this otherwise - you can find the inverter under the screen, follow the procedure described at point 3 to open up the screen.

3. The LCD monitor is faulty
If it works on an external monitor most likely the LCD is faulty and needs replacement. If it's still under warranty, take it for a replacement. If not, you can do it yourself, it's pretty easy. Remove the rubber covers on the side of the screen, unscrew the screws take the plastic cover off, disconnect the video inverter and put in the new LCD after you connect the video inverter to it.

Jan 17, 2011 | Toshiba Satellite M45-S331 Notebook

1 Answer

I changed the inverted in my toshiba satellite


Sounds like the screen itself is bad or possibly the plug is bad to the inverter or motherboard.The videocard sounds like its ok.

Oct 03, 2009 | Toshiba Satellite M45-S331 Notebook

1 Answer

When I turn the computer on the screen doesn't work


This is the monitor not being attached to the Graphics Card properly.

Sep 14, 2009 | Toshiba Satellite M45-S331 Notebook

1 Answer

2nd RAM slot for Toshiba Satellite M45-S331


if its not under the laptop, it can only be under the keyboard.

Jun 18, 2009 | Toshiba Satellite M45-S331 Notebook

1 Answer

My M45/S331 doesn't start nomally


its happen because you left it and it was overheat pls take care your laptop work or keep in cool place while working.

Jun 10, 2009 | Toshiba Satellite M45-S331 Notebook

2 Answers

Toshiba Satellite M45 S331 PSM40U-01R001 will not power on


No.. the problem has nothing to do with your battery....

Yes Quite Possibly the motherboard is fried...

Nov 18, 2008 | Toshiba Satellite M45-S331 Notebook

1 Answer

Display is very dark


Dim screen is usually caused by a bad inverter board especially if you get video to external monitor. Usually cost $100-$200 depending on laptop.

Hope this helps!

Jun 11, 2008 | Toshiba Satellite M45-S331 Notebook

2 Answers

Toshiba M45-S331, Black screen


I just went through all this myself. First I had the inverter replaced ($200) and it worked great for a week, then the screen went out again. It turned out that the LCD needed replaced ($200 more, labor comped from the first no-fix). There's a problem with the Toshiba LCDs that makes them burn out sooner than other brands. Since the replaced screen, no problems (2 months). Sucks, I know.

May 07, 2008 | Toshiba Satellite M45-S331 Notebook

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