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Questions tagged [ac-adapter]

54 questions
16
votes
2 answers

is that possible to use lower amperage ac adapter for my laptop?

I have Toshiba satellite l505 laptop and the ac-adapter is damaged. i found new adapter but it's output is 19v 3.4a and the output for the laptop is 19v 4.7a. is that safe to use the lower voltage?
Sherif Sabry
  • 161
16
votes
13 answers

Laptop touchpad response badly when on power supply?

I have HP pavilion 2200 series laptop with AMD processor, 1GB RAM, on board nvidia display card. It suddenly cause following problem: When the adapter is unplugged, the touchpad works correctly and smoothly. But as soon as it is connected, the…
Niranjan Singh
  • 1,953
8
votes
1 answer

Charge Apple computers bought in USA to use in Europe

I bought an Apple MacBook in the US and would like to use it in Italy. On the cable, it says: 2.5A 125V. What are the possible solutions to charge my computer? Use an adapter, a plug converter or an electric transformer? Someone can explain to me in…
Hoang Pham
  • 462
7
votes
2 answers

laptop motherboard "shorts" when connected to adapter

Disclaimer: I'm sort of a noob, and this is a long post. Thank you all in advance! summary: completely dead laptop with no signs of life whatsoever (suddenly, for no apparent reason) Here's the deal: Lenovo Y470 (a few months past warranty with no…
Cashew
  • 71
4
votes
1 answer

Is it safe to use a laptop AC adapter with 220V power if the AC cable is not rated for 220V?

The AC adapter supplied with my laptop is designed to accept voltage in the range of 100-240VAC at 50-60Hz, but the AC cable that plugs into the adapter unit itself is only rated to 125VAC 7.5A 2.5A. I know the adapter can accept 220V power, but is…
bwDraco
  • 46,683
4
votes
3 answers

Damaged laptop power plug?

Should I be worried about a damaged computer plug? My parents (or someone) knocked it over today. I notice it is no longer straight. There seems like a little tear in the rubber from the fall. I'm mostly worried about how straight it is. It fell on…
user3109
4
votes
1 answer

Is it safe to use a "Universal Laptop Adapter"?

I have seen a "Universal Laptop Adapter" sold in a computer shop before. I am thinking of getting one for a laptop. Is it safe to use? What differences are there between one of these and a typical laptop adapter?
Jiew Meng
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4
votes
1 answer

Replacement AC adapter for my CR-48?

I managed to lose the AC adapter on my Google CR-48. Yeah, already, I know. I have a couple more places to check, but does anyone know where I could find a compatible AC adapter? 19.5v 2.0a is not the sort of thing Radio Shack carries.
Chris Sobolewski
  • 623
3
votes
2 answers

Keeping a laptop power supply on without a laptop connected - any negative consequences?

Sometimes I unplug my Thinkpad laptop from its AC/DC power supply adapter and keep the adapter connected to the power socket. Are there any possible negative consequences? Some ideas I was thinking about: Clearly, it consumes electricity even…
Petr
  • 3,273
3
votes
2 answers

Is it safe to use an American power adapter in India and Australia?

I'm going to India and Australia on a business trip in a couple of days and plan to carry only a tablet instead of my trustworthy laptop (which got dunked in the tub by my oldest - don't ask). The adapter states the following: 100-240V~0.65A,…
Stan
  • 47
3
votes
1 answer

Can I trust this weird BIOS Message ending in 'thanks'?

So I started up my laptop today and was greeted with the following message (not a direct quote): The type of the AC adapter cannot be determined. This may interfere with your computer's performance. Try unplugging the AC adapter and then plugging…
Josh
  • 31
3
votes
5 answers

How to test AC adapter?

I have a Toshiba laptop that is no longer receiving power when it's plugged in. How can I tell if problem is in the AC adapter or in the actual laptop? I could buy a replacement adapter (this is the one), but I don't know if that is actually the…
noctonura
  • 133
2
votes
1 answer

How Do I Know Which Replacement AC-Adapter Is Right For Me?

I'm trying to find a replacement AC adapter for my MSI GS70 Stealth Pro-024. The original stopped working due to damage to the cord. As I began looking I found a number of options but became dismayed when I noted subtle differences with the specs on…
Gedalya
  • 945
2
votes
2 answers

Can a 20V, 4.5A travel adapter replace a 19V, 3.42A charger on ThinkPad T440 Lenovo?

I have a ThinkPad T440 that came with the new adapter plug "slim-fit". The original charger is 19V, 3.42A. I ordered a replacement AC for travel, and Lenovo sent to me a charger that is 20V, 4.5A, with the same polarity. I'd want to ensure that it…
andremartins
  • 29
2
votes
0 answers

Acer Aspire Laptop won't charge in Windows 7 Home Premium x64

I have an Acer Aspire 7750-6801 laptop running Windows 7 Home Premium 64 bit OS. The issue is that it will only charge sometimes when plugged in. I thought it might be a hardware issue, so I tried charging with the laptop off, and it works fine. …
MaurerPower
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