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| Topic Review |
fasteddie717
Sony Buff
Joined: Nov 13, 2004
Posts: 16
From: lancaster, pa
 |  Posted: 2008-06-25 21:29
My VGN-A790 laptap was working fine then suddenly it won't turn on. No beeps or lights or sounds or nothing. The light on the ac adapter does light up when plugged in. Doesn't power up even when the port replicator which connects to the laptop from another place. Any ideas please?
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claudio
Ultimate Sony Reviewer
Joined: Aug 30, 2001
Posts: 2355
From: Rockville, MD
 | Posted: 2008-06-25 23:08
Hi fasteddie717,
Below are the instructions if the VGN-A790 Laptop doesn't turn on
Follow this procedure to troubleshoot no power or the computer does not turn on.
IMPORTANT:
While following this procedure, note the LED status at each step. This will provide additional information for the technician if repair becomes necessary.
If model-specific information is required to complete any of the steps in this solution, refer to the operating instructions supplied with the product. Manuals are available online in the Manuals/Specs/Warranty section of the Sony® eSupport Web site.
Figure 1
NOTE: Some computers are designed with hooks above the LCD screen that secure the lid when closed. A switch inside the holes below the touchpad [FIG. 1]detects when the lid is closed and latched. If the switch is stuck, the computer may not turn on properly. Check to make sure the switch is working properly.
Connect the AC adapter [FIG. 2]into a known working AC outlet and to the DC jack on the notebook.
NOTES:
Do not connect the AC adapter to a surge protector or extension cord.
If the DC jack on the computer is loose or damaged, the computer may require service.
Some AC adapters have a POWER LED indicator and can be confirmed as receiving power by ensuring the LED is lit. If the AC adapter is damaged or the LED is not lit when plugged into a working AC outlet, the adapter must be replaced. A replacement AC adapter can be obtained from the Sony® Direct Accessories and Parts Center Web site or by calling (800) 488-7669.
Attempt to turn on the computer.
Press and hold the Power Switch for 15 seconds.
Attempt to turn on the computer.
Remove the battery.
Disconnect the AC power adapter.
Press and hold the Power Switch for 15 seconds.
Connect the AC power adapter.
Attempt to turn on the computer.
NOTE: If the computer turns on without the battery, connect and charge the battery for 24 hours.
Disconnect all external devices that are connected to the computer.
NOTE: These devices include, but are not limited to, a modem, floppy disk drive, network connection, USB device, printer, keyboard, or mouse.
Attempt to turn on the computer.
Remove any additional Random Access Memory (RAM) that was installed in the computer.
Attempt to turn on the computer.
NOTES:
The troubleshooting steps listed above should resolve your issue. If you have completed all of the steps and the issue is not resolved, service may be required. The Sony® eService Web site at http://eservice.sony.com/ can assist you in obtaining service from a Sony Service Center or locating a Sony Authorized Servicer.
When shipping the computer for repair, include all notes of the LED status that displayed during troubleshooting.
Region
Canada
United States
Below are the Products that have this issue.
PCG505 Series
PCG700 Series
PCG800 Series
PCGC1M Series
PCGC1 Series
PCGC1V Series
PCGC1X Series
PCGF100 Series
PCGF200 Series
PCGF300 Series
PCGF400 Series
PCGF500 Series
PCGF600 Series
PCGFR100 Series
PCGFR700 Series
PCGFR800 Series
PCGFRV20 Series
PCGFRV30 Series
PCGFX100 Series
PCGFX200 Series
PCGFX300 Series
PCGFX400 Series
PCGFX600 Series
PCGFX700 Series
PCGFX800 Series
PCGFXA30 Series
PCGFXA40 Series
PCGFXA50 Series
PCGFXA600 Series
PCGFXA60 Series
PCGGR100 Series
PCGGR200 Series
PCGGR300 Series
PCGGR505 Series
PCGGR50 Series
PCGGR5F Series
PCGGRS100 Series
PCGGRS200 Series
PCGGRS300 Series
PCGGRS700 Series
PCGGRT100 Series
PCGGRT200 Series
PCGGRT20 Series
PCGGRT300 Series
PCGGRT30 Series
PCGGRV500 Series
PCGGRV600 Series
PCGGRX500 Series
PCGGRX600 Series
PCGGRX700 Series
PCGGRZ200 Series
PCGGRZ500 Series
PCGGRZ600 Series
PCGK10 Series
PCGK20 Series
PCGK30 Series
PCGK40 Series
PCGN505 Series
PCGNV100 Series
PCGNV200 Series
PCGNVR20 Series
PCGR505A Series
PCGR505B Series
PCGR505D Series
PCGR505E Series
PCGR505G Series
PCGR505J Series
PCGR505M Series
PCGR505T Series
PCGSR10 Series
PCGSR20 Series
PCGSR30 Series
PCGSR5 Series
PCGSR7 Series
PCGSRX70 Series
PCGSRX80 Series
PCGSRX90 Series
PCGTR1 Series
PCGTR2 Series
PCGTR3 Series
PCGTR5 Series
PCGV505A Series
PCGV505B Series
PCGV505D Series
PCGV505E Series
PCGV505F Series
PCGV505G Series
PCGV505M Series
PCGV505N Series
PCGVX80 Series
PCGX505 Series
PCGXG10 Series
PCGXG20 Series
PCGXG30 Series
PCGXG500 Series
PCGXG9 Series
PCGZ1A Series
PCGZ1F Series
PCGZ1R Series
PCGZ1V Series
PCGZ1W Series
PCGZ1X Series
PCGZ505G Series
PCGZ505H Series
PCGZ505J Series
PCGZ505L Series
PCGZ505R Series
PCGZ505S Series
VGNA100 Series
VGNA200 Series
VGNA600 Series
VGNA700 Series
VGNAR100 Series
VGNAR200 Series
VGNAR300 Series
VGNAR500 Series
VGNAR600 Series
VGNAX500 Series
VGNB100 Series
VGNB200 Series
VGNBX500 Series
VGNBX600 Series
VGNBX700 Series
VGNC100 Series
VGNC200 Series
VGNCR100 Series
VGNCR200 Series
VGNCR300 Series
VGNCR400 Series
VGNFE500 Series
VGNFE600 Series
VGNFE700 Series
VGNFE800 Series
VGNFJ100 Series
VGNFJ200 Series
VGNFJ300 Series
VGNFS500 Series
VGNFS600 Series
VGNFS700 Series
VGNFS800 Series
VGNFS8900 Series
VGNFS900 Series
VGNFZ100 Series
VGNFZ200 Series
VGNN100 Series
VGNN200 Series
VGNN300 Series
VGNS100 Series
VGNS200 Series
VGNS300 Series
VGNS400 Series
VGNS500 Series
VGNS600 Series
VGNSZ100 Series
VGNSZ200 Series
VGNSZ300 Series
VGNSZ400 Series
VGNSZ600 Series
VGNT100 Series
VGNT200 Series
VGNT300 Series
VGNTX600 Series
VGNTX700 Series
VGNTX800 Series
VGNTXN007 Series
VGNTXN10 Series
VGNTXN20 Series
VGNTZ100 Series
VGNTZ10 Series
VGNTZ20 Series
VGNU700 Series
VGNUX100 Series
VGNUX200 Series
VGNUX300 Series
VGNX505 Series
[ This message was edited by: claudio on 2008-06-25 23:13 ]
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claudio
Ultimate Sony Reviewer
Joined: Aug 30, 2001
Posts: 2355
From: Rockville, MD
| Posted: 2008-06-25 23:14
Let me know if this solution worked? I know that some other members have had this issue on other models.
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fasteddie717
Sony Buff
Joined: Nov 13, 2004
Posts: 16
From: lancaster, pa
| Posted: 2008-06-28 07:46
Thanks for the info but sadly it did not resolve the issue. do you know how to take the laptop apart so i can investigate?
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JohnE52T
Sony Buff
Joined: Jun 25, 2008
Posts: 14
From: USA
 | Posted: 2008-06-29 20:04
Hi fasteddie717, from the description of the problem and the fact that after you tried troubleshooting steps posted here the issue still persists it seems like service will be required. Unless you have parts to replace opening the computer may do no good.
If you have a multimeter you can check the output of the AC adapter to verify you are getting a clean signal and if not replace the AC adapter.
Other than that I suggest calling Sony @ 888-476-6972 or going to http://eservice.sony.com both within the USA to setup the computer for service.
John E52T
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fasteddie717
Sony Buff
Joined: Nov 13, 2004
Posts: 16
From: lancaster, pa
| Posted: 2008-06-30 14:17
Thanks John. Well I opened her up already just to take a look. Some times things come lose or tear. I didn't see any thing out of the norm. I may have to take every thing apart to do a better inspection. Last resort, I will call Sony. You mentioned checking the AC adapter for a clean signal. Now, the LED on the AC adapter lights up green when plugged to a receptical. Does that mean it's ok, or can it still be damaged? I have no multi meter, but if it is worth it I will buy one. Thanks....
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JohnE52T
Sony Buff
Joined: Jun 25, 2008
Posts: 14
From: USA
| Posted: 2008-07-01 13:22
The light being lit on the AC adapter does not mean 100% that its not failing. Checking with a multimeter that the output is constant is one way to check it if you have the tools available. This AC adapter the AC19V7 should have an output of 19.5 V. Using a voltmeter/multimeter you can see if the output is constant or if it fluctuates.
Also is this the original Sony AC adapter or one purchased at a local store/online?
John E52T
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fasteddie717
Sony Buff
Joined: Nov 13, 2004
Posts: 16
From: lancaster, pa
| Posted: 2008-07-01 18:25
Yes this is the original AC adapter. I wish it was only the AC adapter. I'm going to check it out. Thanks.
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