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Laptop Killing Power Adapters


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#1 troublesh00ter

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Posted 28 February 2012 - 10:33 AM

Hey there BC. I need your help again or maybe just some advice. Here goes...

I have a Samsung R480 laptop. I think my laptop is killing power adapters. I just replaced my replacement power adapter and it failed after only a few short days of use. The laptop chassis is considerably warm on and around the vent that is located directly beneath the input for the power adapter. This is typically the hottest vent, but it is much hotter than all other cooling spots on the bottom chassis. Is it possible for an internal part to fail and cause excessive voltage/whatever (I'm not an electrician) to flow to the adapter and thus burn it out? If so, what component would this be, the power jack? I love this laptop. It's the nicest one I've ever had and I've managed to take really good care of it. I don't leave it on obstructive surfaces so I am concerned that maybe some part is failing. If you can advise me, I am more than comfortable opening my laptop and poking around. I have the tools and the skills to get in, but I've never replaced anything that's on-board.

Thanks
for3ver,
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#2 rotor123

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Posted 28 February 2012 - 12:37 PM

The laptop should not be able to feed back more voltage to the AC Adapter than it puts out.

However is is quite possible for the laptop to be overloading the AC Adapter.

I just replaced my replacement power adapter and it failed after only a few short days of use.


This would be typical of Cheap EBay AC Adapters. If it is a real Samsung AC Adapter with the proper voltage and current ratings? Then there could be a problem in the laptop.

If bought from Ebay for example it could be a fake. Wherever you got it there are four (4) things the AC Adapter must match
1. Output voltage
2. Output current
3 Output Polarity
4. Output jack must be proper size.

Feeding to high a voltage for example could cause the laptop to run hot and eventually damage it.
Too low a voltage will also cause issues.

Just as an example. When I needed a new AC Adapter for my Toshiba laptop I made sure to get a real Toshiba part that was designed for my laptop. None of that universal junk.

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