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tajar
Joined: 18 Mar 2017
Posts: 3
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 Posted: Wed Mar 29, 2017 5:38 pm Post subject: Laptop does not turn on |
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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: 2
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| Posted: Mon Jul 10, 2017 9:02 am Post subject: |
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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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carlm21
Joined: 06 Jul 2018
Posts: 1
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| Posted: Fri Jul 06, 2018 7:15 am Post subject: |
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| check the ram. May be there is an issue. |
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kevincooper
Joined: 20 Dec 2018
Posts: 1
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| Posted: Thu Dec 20, 2018 9:19 am Post subject: |
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Try taking out any cords and take out the battery and hold the power button down for 30 seconds then put the cord back in and try to turn it on, then put battery back in.
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