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PRESARIO CQ61-420SA not booting no charge light no power

by DAN-DARE / February 4, 2014 8:16 PM PST

hello people i have the above laptop and it was working fine last night shut it down had half battery life now it wont turn on atall no charging light no sounds only lights that come are the 3 in the bottom left of it which flash if i have it plugged in and push the power button, have tried a hard reset to no avail if anybody could help it would be great,



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No power?
by R. Proffitt Forum moderator / February 5, 2014 12:00 AM PST

Did you measure the adapter's voltage output? What is it?

Mind you if you write you have no Volt meter, head to a friend or shop to check that out.

Also, how old? At 4 years I strongly suggest folk limit the repair work. New charger or battery but repairs cost as much as a new laptop today.

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checked voltage
by DAN-DARE / February 5, 2014 12:38 AM PST
In reply to: No power?

now I'm really confused I've tried two adapters one of which i know worked the other day and they've both came back zero output? but there was about 16% left in the battery when i shut it down last night but it wont boot up from that either.

thanks for the reply

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Zero is no good.
by R. Proffitt Forum moderator / February 5, 2014 1:05 AM PST
In reply to: checked voltage

There could be a fault that fries adapters. Remove the battery and check out the input to the laptop power jack on the OHMS scale. 0 or below 1 ohm is a sign the input shorted out.

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not sure
by DAN-DARE / February 5, 2014 7:22 PM PST
In reply to: Zero is no good.

measured it and got 24.3k ohm or .023 m ohm not quite sure what that works out to be to be honest.

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by R. Proffitt Forum moderator / February 6, 2014 12:52 AM PST
In reply to: not sure

Thanks for that. I don't want to upset anyone but you are among the few that accomplished the Ohm check here. With that out of the way, see if Radio Shack can check out the adapter as a sanity check. Or another guru.

There's some hope here.

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thank you
by DAN-DARE / February 6, 2014 3:48 AM PST
In reply to: Applause.

I work in a garage id be worried if I couldnt use a multimeter. Well I tested the adapter theres power going in from the mains but nothing coming out of the adapter. We don't have radio shacks here in the uk, any ideas what to check next or if its worth changing the power jack port?

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Sorry if the words fail us here.
by R. Proffitt Forum moderator / February 6, 2014 7:23 AM PST
In reply to: thank you

If there is no power coming out of the adapter I can't see how changing the power jack port on the laptop will help. In fact it could hurt!


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by DAN-DARE / February 6, 2014 4:57 PM PST

sorry was having a bit of a funny moment there i wasn't sure if them results meant the port was down or not, so really i need try another adapter then? any ideas on whats causing the issue maybe a motherboard problem? sorry for all the questions i am kind of at a loss with it.

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Two parts, unconnected?
by R. Proffitt Forum moderator / February 7, 2014 12:44 AM PST
In reply to: reply

If the power adapter has no output on its own, I can't see how a motherboard is the issue since that's in the laptop and not the adapter.

Of course there is a little motherboard inside the adapter and maybe that's your question. If so, yes, the little board in the adapter is suspect along with the power lines to and from that board in the power adapter.

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