IS this a DV Power jack problem?

[myfathersson]

Does anyone recognise this as being a power jack problem?

Recharge light started to flash regularly on Asus M70V. Pretty soon plug started needing twisting to get it to start actually charging the computer. Soon I noticed that the plug was melting. Then naturally the whole computer stopped charging at all and nothing the plug would do would charge at all

Plug had slight arcing but not so bad that it would prevent power getting through.

I replaced the plug and noticed slight melting at the plastic around the socket. And there is melting on the plastic at the tip of the old plug.

But with the new plug, the light only blinks and no amount of twisting it will get it to work properly

Does anyone think this is a power jack replacement repair or is the problem more likely on the mobo or in the internal power supply?

[Ken]

Post by myfathersson
Does anyone recognise this as being a power jack problem?
Recharge light started to flash regularly on Asus M70V. Pretty soon
plug started needing twisting to get it to start actually charging
the computer. Soon I noticed that the plug was melting. Then
naturally the whole computer stopped charging at all and nothing the
plug would do would charge at all
Plug had slight arcing but not so bad that it would prevent power getting through.
I replaced the plug and noticed slight melting at the plastic around
the socket. And there is melting on the plastic at the tip of the
old plug.
But with the new plug, the light only blinks and no amount of
twisting it will get it to work properly
Does anyone think this is a power jack replacement repair or is the
problem more likely on the mobo or in the internal power supply?

The heat is being caused by current going through a resistance. If it
is taking place at the plug/jack area, it means that is where the
resistance is. There should be little resistance there, so it most
often means a poor connection. I would check the solder connections of
the power jack on the MB if it were my computer.

[myfathersson]

Thanks Ken, very sound and, - I should have known, - obvious advice. The power jack problem is well known and cheap to buy and comparatively easy to replace. (I have done one before)

I just wondered about this flashing light business but I assume the melting led to a short somewhere

Thanks again

[Ken]

Post by myfathersson
Thanks Ken, very sound and, - I should have known, - obvious advice. The power jack problem is well known and cheap to buy and comparatively easy to replace. (I have done one before)
I just wondered about this flashing light business but I assume the melting led to a short somewhere
Thanks again

The flashing LED could be caused by anything. I have seen it caused by
a power adapter that was outputting less than the expected voltage. If
there was a voltage drop due to a high resistance, this could very well
be the cause for the flashing LED.

[Happy Oyster]

On Sun, 5 May 2013 08:37:26 -0700 (PDT), myfathersson

Post by myfathersson
Thanks Ken, very sound and, - I should have known, - obvious advice. The power jack problem is well known and cheap to buy and comparatively easy to replace. (I have done one before)
I just wondered about this flashing light business but I assume the melting led to a short somewhere

No. The contrary is: the heat destroys the contact, so that no current
flows.