Having problems with your Toshiba PORTEGE R500-S5007V U7700 1.33G 2GB 128GB DVDRW 12.1-WXGA WL BT WVB PC Notebook ?

When I boot up my computer, I can barely read my screen because it is so black. Every now and then it boots up normally. I have tried changing the energy usage, etc., and nothing helps.

Answers :

Hi and welcome to FixYa,

The technically correct repair procedure would involve:
  • check/replace the inverter (most likely);
  • \015\012
  • check/replace the inverter controller (likely)
  • \015\012
  • check/replace the CCF lamp (cold cathode florescent) (least likely).
Since all of the above requires that the LCD display panel be opened up for a look & see and considering that the unit is relatively new, then perhaps your best bet would be to seek warranty service/replacement.

Of course, since there are times that the fault does not exhibit itself, then it is also possible that it is just a loose connection or a cold solder among the aforementioned components. Since this would likewise necessitate the opening of the unit, it all goes back to warranty option.

Any repair act to physically open the unit by a non-authorized service center would void your warranty. This is one of those problems that no settings, configurations would correct the issue.

Good luck and thank you for using FixYa.
Replace the inverter board, it controls the screen.
\015\012itor to it. If you have no problems with that monitor, or in any case, your backlight is probably dying, and/or the voltage inverter that supplies high voltage to the backlight is faulty.
For some info about replacing a voltage inverter or backlight, and what some typical symptoms are, see response 5 in this:
Repair Help & Product Troubleshooting for Toshiba PORTEGE R500-S5007V U7700 1.33G 2GB 128GB DVDRW 12.1-WXGA WL BT WVB PC Notebook

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