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Laptop does not turn on

 
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tajar



Joined: 18 Mar 2017
Posts: 3

PostPosted: Wed Mar 29, 2017 5:38 pm    Post subject: Laptop does not turn on Reply with quote

I have a laptop compaq cq71 which have the bellow problem

The laptop does not turn on, when i insert the dc jack its light turn on and after 30 sec it turn off,
After that the board seems dead, nother of leds is on

Can anybody give me any advice what part of board should i measure.
Can it be any foult of southbridge or northbridge?

Can it be any mofset problem.

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KKEEVV



Joined: 10 Jul 2017
Posts: 3

PostPosted: Mon Jul 10, 2017 9:02 am    Post subject: Reply with quote

I'm no expert by any means, but I'm thinking leaky capacitors. Only because that seems to be my biggest problem.

How old is the unit? I ask because I have an old HP mointor that would cycle on and off. After tearing into it I isolated a handful of faulty CAPs.

Or it could be as simple as a failed solder point. When the circuit is cool it has continuity, but when it heats up it creates an open circuit.

But like I stated I'm no expert. but I thought i'd throw in my two pennies.
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