Question about Sony VAIO VGN-SZ120P/B Notebook

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AC power vs Battery power

I don't use this laptop much, but keep it plugged into AC power so the battery should be charged. It works fine at full brightness when on AC, but if I unplug it the brightness drops considerably immediately. I don't recall that happening when I first got it last year. Any way to fix this?

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Re: AC power vs Battery power

Go into your task bar and wher eu see the battery indicator click on it once and click on it and go in there will be a power plan option there fromt here u can set the brightness when u are working on battery ... hope that answers the question

Posted on Jun 25, 2007

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Re: AC power vs Battery power

It would have done, because when running on battery the laptop goes into power saving mode and the brightness and processor would be slowed down. If you go into your power settings of the laptop, which will probably be in the taskbar as a battery icon, right click on it and you should be able to change the brightness settings or use the 'Fn' and the Star shaped icons normally on the right and left keys or within the power options in control panel.

Posted on Apr 29, 2007

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NEW Battery not properly charging

Batteries have electronics data that software has to get to properly charge it. Newer lithium batteries maybe different. But apparently, you have a work around for a lengthy use of the new battery.

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Why wont battery charge on laptop

A) The Battery is old, and beyond charging

B) The AC adapter (Charger) may be bad, and/or one of it's cables may be bad. If there is no one to test it with a multimeter, take it to a computer repair shop, and have it tested.

If bad suggest you look around at prices on the internet, before buying one from the repair shop. (If offered)

C) The port on the laptop, that the AC adapter (Charger) plugs into, is the DC Power Jack. (May be labeled as DC IN )

This jack may be soldered directly to the motherboard, in the laptop, or is attached to a cable which plugs into the motherboard.

For the style that is soldered directly to the motherboard, it's solder connections may have received damage.
Normal plugging in, and unplugging, may have cracked it's solder joints.

Bad connection caused by cracked solder joints, could = no power to battery. (Even though the laptop May be receiving power)

If laptop operates fine on the AC adapter, but the Battery will not charge, the problem may be a power sensor chipset, on the motherboard. May require replacement of the motherboard.

{ This chipset senses;
A) When the battery needs a Full charge, or just a trickle charge.
B) When the battery needs No charge, and power just goes to the laptop.
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Jan 15, 2012 | Dell PC Laptops

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Acer Aspire 5610 battery won't charge. AC chord is plugged in. Battery reads at 3%.

either dead battery or burned out power supply try buying universal one from radioshack or best buy make sure you can return it if its not solving the problem.

Mar 02, 2011 | Acer Aspire 5520-5908 Notebook

2 Answers

Its that the battery is not charging, and on the power meter icon its blinking four times orange and one time green. If I remove the battery, the laptop works with ac adapter. but if I reinstall the...

Check for a DC connector problem:

Symptoms of a broken power jack
1. If you wiggle the power cord or the AC Adapter connector on the back of the laptop, the power LED and battery charge LED start to flicker.
2. Battery will not charge in the laptop.
3. Laptop runs fine off a charged battery.
4. With the AC Adapter connected the laptop appears to be dead.
No power LED or battery charge LED activity.
5. Laptop randomly powers off without any warning.

If your laptop is out of warranty, then you can fix the problem by re-soldering DC-IN jack on the system board. If it

Feb 06, 2011 | Dell Latitude D610 Notebook

3 Answers

Says plugged in not charging

Take out the battery and make sure you can turn on the laptop with just the AC Adaptor hooked up.

If you can then you know the AC Adaptor is good. Try another known good working battery in the laptop, if the battery charges then you know that the old battery is bad.

If the laptop doesn't charge with a know working battery or a new one then you know that the motherboard is bad.

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1 Answer

I have a Dell Studio laptop. Will power on with

This should have a "battery check" button on the battery itself. Remove the battery and press the button. If it reveals that the battery is not fully charged, or you cannot get it to take full charge, perhaps all that you need is a new battery. If the battery is failing the check the system makes on it at boot, it won't.

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Strange ac cord/power issues

Hello my friend, Try to check your battery if the is it working normal cause sometimes the battery itself has the problem its either lost contact or the battery is not charging or not normal. also try to see if the the the sensor or that links the battery to the software which is responsible to the update of charging energy is functioning normal but this is a rare possibility try to focus on the battery or the connector or power cord.
Hope this will able to help solve you problem. If you need more assistance just reply to this post. Thank you

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2 Answers

Laptop won't charge while it is turned on

Have a look under your control panel for power options.
I'm using Vista but should basically be the same. Click on "Change when CPU sleeps"
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1 Answer

My PC won't run with ac /dc power!

Hello. There is a hardware failure with the laptop not the AC charger. AC chargers have some range of protections of their own. If the power requirements of the laptop are bigger then what the charger can handle, the charger will turn off. Also other parameters can bring the charger offline. In your case, you have a problem with a small chip, the battery charge controller unit, witch regulates the amount of current required to propperly charge the battery. When this thing fails, the charging requirements for the battery are reported rong and the AC charger is forced to give more power then necesary. This results in disconnection of the AC charger ( an internal fail safe of the AC charger) and the laptop to swich back to battery power. When the laptop is turned off, it can charge the battery because the power requirements are low, having all processor, main board, hard disk etc turned off. Therefore the AC charger can handle the load. However you will need to have it checked by a service center as it is a hardware fault. Both AC charger and laptop needs that check. The charge controll circuit needs to be replaced probably. It will be a somewhat expensive repair. Don't buy any other battery untill you have the laptop checked. For more aditional info please post back. PS. Sorry for my bad english, I am from Romania, it is pretty hard for me to explain tehnical stuff in english.

Feb 12, 2007 | Sony VAIO FRV28 Notebook

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