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#166941 - 20th Aug 2007 1:30am Weird Problem With Laptop PSU
MattLFC Offline
Wiki Master

Registered: 14th Aug 2004
Posts: 22315
Loc: Moreton/Beirut/Mobile
Basically, it keeps switching itself off randomly as though some sort of cut off point within the adaptor itself and the fuse is letting through too much power. Sometimes its every few minutes, other times its every half hour or so.

Take the plug out of the adaptor and plug it back in, or flick the power switch off then back on and its fine again until the next time it decides to go off.

There is a 10amp fuse in it atm, because last month I had to replace the 5amp for the same reason and didnt have a new 5amp to hand.

After I replaced the 5 amp it seemed to work fine until tonight when its started doing it again.

Gonna get a new 3amp and 5amp fuses to try tomorrow, but any other idea's??

smile


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#166943 - 20th Aug 2007 1:32am Re: Weird Problem With Laptop PSU [Re: MattLFC]
_Ste_ Offline


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Registered: 7th Aug 2005
Posts: 15987
Loc: New Brighton
Maybe the adapters overheating?

Try another one (if possible)


Edited by Totopop (20th Aug 2007 1:33am)
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#166944 - 20th Aug 2007 1:35am Re: Weird Problem With Laptop PSU [Re: _Ste_]
MattLFC Offline
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Registered: 14th Aug 2004
Posts: 22315
Loc: Moreton/Beirut/Mobile
Lol I wish I had another to try. I thought about it overheating yano (I did for a while think this had to be the problem), but how would we then explain it going back to normal operation (well for a month or two) when the fuse was change?

It does get quite hot however, although no hotter then usual. Its 135watt (has to power a full Pentium 4 laptop) so it does run hotter then most laptop adapters.

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#166945 - 20th Aug 2007 1:39am Re: Weird Problem With Laptop PSU [Re: MattLFC]
MattLFC Offline
Wiki Master

Registered: 14th Aug 2004
Posts: 22315
Loc: Moreton/Beirut/Mobile
Mind you, my old kettle used to physically turn itself on and off so maybe im just jinxed??

Or maybe its me ded nan and grandad playing tricks on me lol.

grin

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#166946 - 20th Aug 2007 1:40am Re: Weird Problem With Laptop PSU [Re: MattLFC]
_Ste_ Offline


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Registered: 7th Aug 2005
Posts: 15987
Loc: New Brighton
Maybee its overheating faster than normal? in order for the fuse to blow there must be a serge in the power, the reason it lasts a bit longer with a higher fuse is because it takes more to blow it.
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#166947 - 20th Aug 2007 1:41am Re: Weird Problem With Laptop PSU [Re: _Ste_]
MattLFC Offline
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Registered: 14th Aug 2004
Posts: 22315
Loc: Moreton/Beirut/Mobile
Well the fuse cant be blowing can it cos wouldnt that mean it wouldnt work again until its replaced??

think

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#166949 - 20th Aug 2007 1:50am Re: Weird Problem With Laptop PSU [Re: MattLFC]
_Ste_ Offline


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Registered: 7th Aug 2005
Posts: 15987
Loc: New Brighton
Duhhh, silly me, lol smack
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#166950 - 20th Aug 2007 1:52am Re: Weird Problem With Laptop PSU [Re: _Ste_]
MattLFC Offline
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Registered: 14th Aug 2004
Posts: 22315
Loc: Moreton/Beirut/Mobile
Lol, it must be due to some sort of cut out protection device in the adapter... im just wondering whats causing it haha!

It hasnt done it since I started this bloody thread now lol!

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#166991 - 20th Aug 2007 2:51pm Re: Weird Problem With Laptop PSU [Re: MattLFC]
MattLFC Offline
Wiki Master

Registered: 14th Aug 2004
Posts: 22315
Loc: Moreton/Beirut/Mobile
Well it happened this morning, when I first turned the laptop on, so it can't be overheating.

Replaced the fuse with a 5amp and it still happened a couple of times, so I will have to try a 3amp when I can find one.

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#167000 - 20th Aug 2007 6:21pm Re: Weird Problem With Laptop PSU [Re: MattLFC]
BMW Joe Offline
Wiki Master

Registered: 30th Apr 2006
Posts: 12369
Loc: Birkenhead
I'm guessing the PS adaptor/transformer is fooked - faulty component inside or dodgy connection?

Try moving it about and knocking it to see if thats what causes it?

Wouldn't be a fuse though.
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#167002 - 20th Aug 2007 6:24pm Re: Weird Problem With Laptop PSU [Re: BMW Joe]
MattLFC Offline
Wiki Master

Registered: 14th Aug 2004
Posts: 22315
Loc: Moreton/Beirut/Mobile
Dunno, its been okay since this morning. I might phone up Acer and get them to have a look at it though as its still under insurance.

Got a feeling if I send it back to them, they will turn around and say there isnt a fault lol and send it back and then the fault will re-occur, because its a random fault that doesnt happen all the time.

think

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#167024 - 20th Aug 2007 8:33pm Re: Weird Problem With Laptop PSU [Re: MattLFC]
_Ste_ Offline


Wiki Master

Registered: 7th Aug 2005
Posts: 15987
Loc: New Brighton
Demand a replacement, you pay for extra cover, your entitled to it. Just explain its an intermitant fault and you need it for work etc.
These aren`t cheap!
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#167032 - 20th Aug 2007 8:57pm Re: Weird Problem With Laptop PSU [Re: _Ste_]
MattLFC Offline
Wiki Master

Registered: 14th Aug 2004
Posts: 22315
Loc: Moreton/Beirut/Mobile
Yeah, I think im gonna have to contact them about it, cant be assed paying for a new one, the cheapest I have found one for my laptop is 39.00 for the one included (I can probably get cheapo ones from Hong Kong, but I won't trust cheapo power supplies im afraid).

smile

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