SONY LAPTOP
REPAIR
Common problems in Sony laptop
- No power at all: Bad power chip, open circuit, short circuit,
or loose connection.
Symptoms:Nothing showing up when you press the power button
- Power but no boot: Bad Input/Output controller chip, or bad
video chip.
Symptoms: The LED light Turing on but the computer still doesn't
boot.
- Shut down when move: Open circuit, loose connection, cold
solder
Symptoms: shut down when move the laptop
- Broken power jack: Loose connection, cold solder, broken
jack
Symptoms: Need wiggle to connect, no power at all, intermittent
power up
- System hangs: Bad video chip, bad hard drive controller, bad
CPU controller.
Symptoms: System hangs when the windows starting, running for
5-10 minutes, or playing DVD
- No charge: Bad charging chip, bad diodes, bad inductor, bad
power jack, or open circuit
Symptoms:Works with battery but it doesn't work with AC adapter,
no power at all.
- Graphic Problems: Bad video chip on the board or bad LCD
Symptoms: Vertical/horizontal lines, distort color, flickering,
intermittent booting
- Over heat: Bad thermal chip, bad fan
Symptoms: Restart unexpectedly, shut down randomly
- Doesn't recognize devices: Loose connection, cold solder,
bad input/output controller chip set
Symptoms: doesn't recognize hard drive, USB ports, Digital card,
CD ROM, PCMCIA, wireless card etc.
- Cannot go to the internet: Bad Input/output controller, bad
Ethernet chip and wireless card, loose connection, cold solder
Symptoms: No internet signal(the page cannot be displaced)
- Laptop has blue screen (pictures):
bad hard drive, bad hard drive controller, bad input/output controller
chip set.
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