sony l-top pcg-7a2l starts, no screen-

Sony / Pcg-7a2l
March 2, 2010 at 04:10:12
Specs: WIN XP HOME EDITION
my lap top sounds like normal start, but no screen and cpu fan doesnt come on now.any body have schematics or sugestion.

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#1
March 2, 2010 at 06:39:48
The fan inside laptops goes on and off depending on how warm it is inside the case, and may not spin when you first boot the computer.

If it's leds seem to indicate it's working normally, your display may be the only thing that has failed.

Laptop no video and battery / AC adapter T shooting

See response 1:
http://www.computing.net/answers/ha...

If you get no display when an external monitor is connected, you may need to consult the Owner's or User's manual for the model - there may be a key or key combo that toggles the LCD display / external display / both.

When I was looking for info about a friend's old Sony laptop, I found the model on the label on the case was not the one Sony requires to find info about a model on their web sites - the actual model number they want is stated in the bios Setup. There are free or cheap service manuals available on the web for many Sony laptop models but you may need to search using the model number stated in the bios - I did, and found one.
On that laptop his backlight had burned out - he tried replacing the voltage inverter but that didn't help - an external monitor works fine without needing to press a key or key combo.

If you can't get a display even when an external monitor is connected, if you search the web using : Sony Pcg-7a2l manual or similar there may be mentions in some of the "hits" what model you actually need to search for info or a service manual about.


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#2
March 3, 2010 at 22:59:05
Thank you for your input regaurding my sony laptop. The computer doesnt seem to have any hidden moniter switchs, and it will not work with an external moniter either.

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#3
March 4, 2010 at 00:05:13
See the link in response 1 regarding your AC adapter and main battery etc. You'll get no video if the main battery is not charged enough or is defective.

"If you get no display when an external monitor is connected, you may need to consult the Owner's or User's manual for the model - there may be a key or key combo that toggles the LCD display / external display / both. "

If that doesn't help, the external monitor won't work, then the video adapter is probably fried - it's probably built into the mboard, so you would have to replace the mboard.


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#4
March 6, 2010 at 02:34:38
thank you for your input, now I am looking around for a good used mobo.

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#5
March 6, 2010 at 07:01:33
OK.
There may be more than one possible mboard - you may need to open up the laptop and find the Sony part number(s).
Falied LCD displays on laptops are very common.
Good luck.

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#6
March 7, 2010 at 12:27:51
appreciate the info, i've been @ the sony website and now i understand a lot more. thnx

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