Question about Sony VAIO Computers & Internet
Power supply connected to mains and dc-connector connected to laptop. Dc voltage about 19 to 20Vdc but laptop battery get not charged.
Posted by Anonymous on
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Posted on Jan 02, 2017
You have 2 choices.. One : You can Desolder the DC Power Jack from the mainboard, clean the pins and connections on the board, then Resolder the DC Power jack back on. Or TWO: purchase a new DC Power Jack and Remove old one / replace with new one.. This will fix your Laptop Power problem..
Posted on Jun 02, 2008
SOURCE: Power supply problem
This is going to be with the power management system on the motherboard. These are the classic text book symptoms of a failed power management chip. Few shops will be able to fix this, most just say replace the motherboard, you might get lucky and find one in your area that can fix it, if not then you will need to send it to Acer for repair.
Posted on Jul 30, 2008
Most likely, the DC jack on your laptop has broken either a solder joint or one of the leads the connect it to the motherboard. Unfortunately, it's a common thing on some laptops due to the stress the DC jack sees during use (getting banged around, yanked out, bumped, etc). If you're lucky, there are instructions online on how to disassemble your particular model of laptop to the point of reaching the DC jack, but you should be very comfortable with such an endeavor (and a soldering iron) before attempting it. Otherwise, a local computer repair shop should be able to help you out.
Posted on Mar 16, 2009
The loose connection for the AC adapter means the motherboard needs to be replaced or the AC adapter jack on the motherboard needs to be replaced. (With Labor, it is about the same cost to buy a new motherboard as it is to have the old one fixed)
Motherboards are available on EBay for around $100
Posted on Apr 26, 2009
SOURCE: Hellow Dear, My acer aspire 4935
First, you need to make sure your power adapter is providing enough
power to both run the laptop & charge the battery. A very good way
to do this is to compare your laptop voltage & ampere requirements
(written on a sticker on the bottom of the laptop) with the voltage
& ampere ratings of the power adapter. Voltages should be the same,
or the power adapter's voltage about up to 0.5 volts more than the
laptop's voltage rating. Amperage of the power adapter should be at
least equal to or greater than the laptop's rating. It should never be
less than the laptop's rating, or else the power adapter will be
providing insufficient amperes to charge the battery. Of course, the
power adapter's nominal amperage might be ok, but it degraded on usage.
You can verify this by testing using a good or new power adapter.
If the battery did not charge using the new power adapter, take the battery off the laptop, & using a dry tooth brush, scrub in between the fins of the battery connector on the motherboard & on the battery it self, then put the battery back into the laptop & try again.
If this still did not resolve the problem, then the battery itself could be bad. Try it on another laptop, or try a good or new battery in your laptop.
If this did not work, there might be a possibility that the charging circuitry on the laptop's motherboard is defective & needs servicing. In order to do this, the laptop needs to be disassembled & the motherboard checked for defective/burned out components in the area near the DC jack. Any defective/burned out components found should be replaced, or you might need to replace the laptop's motherboard altogether.
Posted on Sep 15, 2010
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