Having problems with your Toshiba Satellite A135-S2276 Notebook ?

I have a problem with my toshiba a135. All the power lights are on but my screen is blank. can you tell what the problem is?


Answers :

Hi.\015\012
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\015\012To start do the simple reset described below, this is the first step in troubleshooting.\015\012
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\015\012Disconnect the power adapter cord and remove battery, wait ten minutes, connect the power adapter only and try restarting. If that does not work, try also restarting with battery inside and adapter.\015\012
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\015\012If that still does not work, and the laptop turns on, but does not display anything on screen from start, then try connecting an external monitor. Borrow or get one, if you do not have a monitor you will need to test the laptop at a computer shop.\015\012
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\015\012If the laptop is showing display on external monitor, then either the main board is faulty, the inverter is faulty, or there is a problem with laptop's LCD display.\015\012
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\015\012If the laptop has display when using an external monitor, then you are in one of the following cases :\015\012
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\015\0121) Laptop display is completely dark, there is picture on external display. Laptop display backlight is not coming on.\015\012
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\015\012This usually means that the inverter board is faulty. The inverter is the board that supplies power to the LCD display back light system. On Toshiba the inverter is a long rectangular shaped board located at the base of LCD display. The inverter is an high voltage board, and for safety reasons it must be tested or repaired only by trained personal.\015\012
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\015\012The inverter is the most common cause for the conditions described in 1) . In some case a faulty main board can cause the same problem because the motherboard does not supply power to inverter. This last fault is not very common.\015\012
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\015\0122) The laptop display has back light, but does not show any picture, there is picture on external monitor.\015\012
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\015\012This means that either LCD ribbon cable is broken (most common), or that the mainboard VGA connector LCD is defective. Problem is fixed replacing ribbon cable first , then eventually replacing motherboard or LCD. Because of parts price this is better fixed at a computer repair workshop.\015\012
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\015\012If instead the laptop has no display on internal LCD and no display on external monitor, then it is often the graphic adapter integrated on motherboard, or a different motherboard function.\015\012
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\015\012In this case the unit is repaired replacing the motherboard. Before replacing the motherboard the technician will summarily test connectors and parts that can cause the motherboard not starting.
Repair Help & Product Troubleshooting for Toshiba Satellite A135-S2276 Notebook

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