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Laptop power


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#1 Albert Frankenstein

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Posted 10 June 2009 - 05:18 PM

I have a question regarding a Gateway MX6450 laptop. I just bought this laptop for my son. It did not have a working mobo, so I bought a used one on eBay, installed it, and everything was working great for about a day. Now I have an issue I don't fully understand.

The power switches between battery and A/C. You do not have to move the power cord, or do anything to the computer, it does this all on it's own, in a rhythm:

3 seconds on battery,
1 second on A/C,
3 seconds on battery,
1 second on A/C...etc...

At first you might think this is the dc jack, but again moving the power cord has no effect on this, plus it does not seem loose.

I used a meter on the A/C adapter and I show a constant 19.6 volts. It does not waver.

So, is this an issue with the A/C adapter, the dc jack, or the mobo? And how do I test?

Edited by Albert Frankenstein, 10 June 2009 - 05:25 PM.

ALBERT FRANKENSTEIN
I'M SO SMART IT'S SCARY!


Currently home chillin' with the fam and my two dogs!


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#2 Sneakycyber

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Posted 10 June 2009 - 07:21 PM

Could be a problem with either the battery or the power circuit. For some reason the laptop seems to think its loosing AC power. I would try the laptop without the battery in and see if it turns off. Also check and see if the battery is charging properly.

Chad Mockensturm 

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Certified CompTia Network +, A +


#3 Albert Frankenstein

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Posted 11 June 2009 - 06:51 AM

Hello,

Well, I removed the battery, pluged in the A/C, and when I push the power button I get just a flash of lights and then no lights. If I hold down the power button it continues in the same rhythm, a flash of lights - no lights for 2 seconds or so - a flash of lights - no lights for 2 seconds or so....etc.

Hmmmmm. <scratches head> :thumbsup:
ALBERT FRANKENSTEIN
I'M SO SMART IT'S SCARY!


Currently home chillin' with the fam and my two dogs!


#4 Sneakycyber

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Posted 11 June 2009 - 05:21 PM

According to manufacture specs the out put of the power brick is 19V. Somethings sounds fishy with the Motherboard. Did the board have a separate charging circuit or was the charging jack mounted to the motherboard? You may want to contact the vendor that sold it to you.

Chad Mockensturm 

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Certified CompTia Network +, A +


#5 Albert Frankenstein

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Posted 16 June 2009 - 01:38 PM

RESOLVED.

The issue was with the A/C adapter. I bought a new one and everything is fine now.

I have never seen this particular issue before, and it sure was pointing to a bad mobo, but nope. It was the A/C adapter. Thanks for your help.
ALBERT FRANKENSTEIN
I'M SO SMART IT'S SCARY!


Currently home chillin' with the fam and my two dogs!


#6 Sneakycyber

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Posted 16 June 2009 - 04:19 PM

Awesome. Glad it was something easier than a new MOBO

Chad Mockensturm 

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