Having problems with your Toshiba Satellite A135-S4457 Notebook ?

Screen will not come on - Toshiba Satellite A135-S4457 Notebook

Answers :

More details will help, if you can see a faint image then its either your lcd or inverter. The below info is if it shows a very faint image if you look at the screen in the light.

Normally this is caused by the power inverter for the lcd2.gif.It is a small circuit board right below the lcd, that powers thebacklight. If you take off the front bezel of the laptop you should beable to see it, it will have a 2 wire power cord coming out the oneend, and another plug in2.gif on the other end with several wires.

9 times out of 10 the problem is just the inverter going out, check ebay for a replacment but make sure you get an identical model as the one you have, as they are very specific to each laptop. The inverter will have the part number written on it.
The laptop is most likely unable to start up. In most cases its a hardware issue, should take the laptop to a local professional for a check or if your in warranty contact toshiba.

Possible reasons could be bad memory, overheating, failed mainboard, failed video adapter, loose contact between display and mainboard.

You can try reseating the memory in the bottom of the laptop, it will be covered with 2 screws.

Remove them, and take out the ram from the computer, make sure they are\015\012clean, do not use water, or clean them, you can use the eraser end of a\015\012pencil to clean the contacts on the memory modules.

Place them back in and make sure they are in the right away, only handle them from the sides.

If\015\012the problem still remains, unplug and remove battery again, (might\015\012aswell keep the battery removed untill the issue is solved.)

Remove both ram modules from the laptop.

Start up the laptop with no ram at all, it may beep or complain, or it may do noting, unplug after 1 minute.

Plug\015\012in the other memory card, plug the machine to power, try starting up,\015\012if it works, turn it off and place in the other aswell, turn on and see\015\012if the machine works, if it does, problem solved. If it does not work.

Remove both ram modules, try the other memory on both slots and try starting up each time, remember to unplug power every time.

If the problem remains then do the same with the other memory module try it on both slots.

Next thing you could check at home is the cables between the display and the mainboard, you can also check the display in a dark room or under a light and see if there is picture on the display but no backlight, in that case the issue could be the cables between the mainboard and the inventer or the inventerboard or the backlight itself.

This will require repair in any case take it to a local professional.

Repair Help & Product Troubleshooting for Toshiba Satellite A135-S4457 Notebook

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